{"id":8711,"date":"2023-01-09T15:25:37","date_gmt":"2023-01-09T09:55:37","guid":{"rendered":"https:\/\/threatcop.com\/blog\/?p=8711"},"modified":"2026-04-13T17:25:43","modified_gmt":"2026-04-13T11:55:43","slug":"primary-dns-and-secondary-dns","status":"publish","type":"post","link":"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/","title":{"rendered":"What are Primary DNS and Secondary DNS?"},"content":{"rendered":"\n<!-- Key Takeaways Section | Threatcop Brand Style (Balanced Readability) -->\n\n<style>\n.threatcop-summary {\n    border: 1px solid #2f80ed;\n    background-color: #f2f7ff;\n    padding: 22px 26px;\n    border-radius: 6px;\n    margin: 30px 0;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Arial, sans-serif;\n    color: #1a1a1a;\n}\n\n.threatcop-summary h3 {\n    margin-top: 0;\n    margin-bottom: 14px;\n    font-size: 20px;\n    font-weight: 700;\n    color: #0b3d91;\n}\n\n.threatcop-summary ul {\n    margin: 0;\n    padding-left: 20px;\n}\n\n.threatcop-summary li {\n    margin-bottom: 10px;\n    font-size: 16px;\n    line-height: 1.8;\n    font-weight: 500;\n    color: #2b2b2b;\n}\n\n.threatcop-summary li strong {\n    font-weight: 700;\n    color: #1a1a1a;\n}\n<\/style>\n\n<div class=\"threatcop-summary\">\n    <h3>Key Takeaways<\/h3>\n    <ul>\n        <li>DNS maps domain names to IP addresses for website access.<\/li>\n        <li>Primary DNS is the authoritative source for creating and updating records.<\/li>\n        <li>Secondary DNS is a read-only replica that ensures backup and continuity.<\/li>\n        <li>DNS resolution flows through recursive, root, TLD, and authoritative servers.<\/li>\n        <li>Using both primary and secondary DNS improves uptime, resilience, and reliability.<\/li>\n    <\/ul>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">A DNS server is a computer server that keeps a database of hostnames and public IP addresses. It uses these to resolve or convert hostnames to IP addresses. DNS servers use unique protocols to connect to web browsers while running specialised software. The IP address of a website is more difficult to remember than a domain name or hostname, which are generally in the format of xyz.com. The DNS server facilitates communication between humans and computers by mapping domain names to IP addresses, making it easier to navigate the internet.<\/span><\/span><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-9a83224d112f04ff6f0bac83e8c63a31 wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\">The hosts containing the DNS databases are called DNS servers or domain servers. They are interconnected and routinely communicate<\/span> to coordinate directory information and establish redundancy. Primary DNS and secondary DNS servers are <span style=\"font-weight: 400; color: #000000;\">two different categories of DNS servers.<\/span><\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #414141;color:#414141\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #414141;color:#414141\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#What_is_a_DNS_Server\" >What is a DNS Server?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#What_is_Primary_DNS\" >What is Primary DNS?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#How_Does_Primary_DNS_Work\" >How Does Primary DNS Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#Benefits_of_Primary_DNS\" >Benefits of Primary DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#What_is_Secondary_DNS\" >What is Secondary DNS?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#How_does_Secondary_DNS_Work\" >How does Secondary DNS Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#Benefits_of_Secondary_DNS\" >Benefits of Secondary DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#Difference_Between_Primary_DNS_and_Secondary_DNS\" >Difference Between Primary DNS and Secondary DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#DNS_Security_Risks_You_Should_Know\" >DNS Security Risks You Should Know<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#Final_Thoughts_What_are_Primary_DNS_and_Secondary_DNS\" >Final Thoughts: What are Primary DNS and Secondary DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/threatcop.com\/blog\/primary-dns-and-secondary-dns\/#FAQs\" >FAQs<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-8d538002675e5c58e37ab6a6eab273f2 wp-block-paragraph\">Questions like &#8220;What is the difference between primary and secondary DNS?&#8221; and &#8220;Do I need a secondary DNS server?&#8221; come up constantly among network administrators and IT teams. This blog answers both clearly.<\/p>\n\n\n<style type=\"text\/css\">\n      @media print, screen and (max-width: 63.99875em){\n      .tnp-submit\n      width: 48%;\n      }\n      .wp-block-tnp-minimal{\n      padding: 20px;\n      }\n      .blog_para\n      margin-top: 4px !important;\n      line-height: 25px !important;\n      font-size: 15px !important;\n      }\n\n      }\n      .blog_para{\n      font-family: jost,sans-serif;\n      margin-top: 14px;\n      margin-bottom: 30px;\n      color: #fff;\n      font-size: 15px !important;\n      color: black !important;\n\n      }\n\n      .wp-block-tnp-minimal{\n      padding:20px;\n      border: 1px solid grey;\n      }\n\n      .tnp-submit a{\n        background: #1d58c7!important;\n    border-radius: 5px!important;\n    text-transform: inherit!important;\n    padding: 8px 25px!important;\n    font-weight: 600!important;\n    color: #fff!important;\n    width: 30%!important;\n    border: none;\n      }\n\n      .blog_get{\n      font-size: 24px !important;\n      font-weight: 700;\n      padding-bottom: 0px;\n    font-family: 'Poppins' !important;\n      margin-bottom: 0px;\n      margin-top: 0px;\n      margin-bottom: 0px !important;\n      color: white;\n          line-height: 30px;\n          color: white;\n      }\n      .row{\n             display: flex;\n    flex-wrap: wrap;\n    flex-direction: row;\n    padding: 25px 0px 25px 36px;\n    align-items: center;\n\n      }\n\n.colLeft{\n         flex-basis:50%;\n    -webkit-box-flex: 0;\n    flex-grow: 0;\n    max-width: 50%;\n    color: white;\n}\n    \n .colRight{\n       flex-basis: 45%;\n    -webkit-box-flex: 0;\n    flex-grow: 0;\n    max-width: 50%;\n }\n\n.tnp-subscription-minimal{\n    float: right;\n}\n<\/style>\n<div style=\"max-width: 741px; margin: 0 auto; background-image: url('https:\/\/awareness.threatcop.ai\/marketing\/linkedinlowerbanner.webp'); background-repeat: no-repeat; background-size: cover; background-position: center; \">\n<div class=\"row\">\n<div class=\"colLeft\">\n<p class=\"blog_get\" style=\"font-family: 'Poppins' !important; color: white !important\">Subscribe to Our Newsletter On Linkedin<\/p>\n<p class=\"blog_para\" style=\"font-size: 16px;font-family: 'Poppins' !important; color: white !important; margin-top: 10px; margin-bottom: 28px;line-height: 25px;\">Sign up to Stay Tuned with the Latest Cyber Security News and Updates<\/p>\n\n<div>\n<div class=\"tnp\" style=\"margin-bottom: 10px;\">\n            <form action=\"https:\/\/threatcop.com\/newsletter-thank-you\" method=\"get\" target=\"_blank\">\n<div class=\"tnp-submit\">\n                  <a class=\"libutton\" href=\"https:\/\/www.linkedin.com\/build-relation\/newsletter-follow?entityUrn=7062043746430783488\" target=\"_blank\" rel=\"noopener\">Subscribe<\/a><\/div>\n<\/form><\/div>\n<\/div>\n<\/div>\n<div class=\"colRight\">\n<div>\n<div class=\"tnp tnp-subscription-minimal \">\n            <img decoding=\"async\" src=\"https:\/\/awareness.threatcop.ai\/marketing\/newsletter-icon.webp\" class=\"img-fluid\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_DNS_Server\"><\/span><b>What is a DNS Server?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">A Domain Name System (DNS) server is a server that translates domain names (such as www.threatcop.com) into IP addresses (such as <\/span><span style=\"font-weight: 400;\">35.245.62.2<\/span><span style=\"font-weight: 400;\">). So, computers can communicate with each other using the Internet.<\/span><\/span><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-28e307d64843e782c634723d53b52757 wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\">For browsers to load Internet resources, DNS converts domain <\/span>names to IP addresses. Every server has a distinct IP address that other computers can use to locate it. DNS servers are often used to resolve domain names to IP addresses and vice versa, and can also store other <span style=\"font-weight: 400; color: #000000;\">information about domain names.<\/span><\/p>\n\n\n<div class=\"wp-block-image wp-image-8714 size-full\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"300\" src=\"https:\/\/threatcop.com\/blog\/wp-content\/uploads\/2023\/01\/Picture2.jpg\" alt=\"primary dns and secondary dns\" class=\"wp-image-8714\"\/><figcaption class=\"wp-element-caption\"><span style=\"color: #000000;\">What is a DNS server? (Source: KeyCDN)<\/span><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Primary_DNS\"><\/span><span style=\"color: #000000;\"><b>What is Primary DNS?<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-13972b9c92828e3a2d3edc687e0713a8 wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">The system and the users do not speak the same language. A translator is needed to convert a user-entered domain name into the website&#8217;s<\/span><\/span> IP address whenever a query arises. Computers use DNS servers\u00a0<span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">for\u00a0i<\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">nternal communication.<\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\">Every time we search for a website in a browser, the entry is converted into the domain\u2019s corresponding IP address by the DNS server. The DNS record on the primary DNS server has the correct IP address for the hostname.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Does_Primary_DNS_Work\"><\/span><span style=\"color: #000000;\"><b>How Does Primary DNS Work?<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-fca028ce2f67f43ae205271d3f3c47ea wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">The Domain Name System<\/span><\/span> stores DNS records and converts domain names into IP addresses, which are easily understood by machines. These IP addresses are provided to the domain by the primary DNS&nbsp;servers<span style=\"color: #000000;\"><span style=\"font-weight: 400;\">.<\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\">These are the following steps decoded by the user during a query:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"color: #000000;\"><b>Step 1: <\/b><span style=\"font-weight: 400;\">The user&#8217;s device contacts the recursive nameserver.<\/span><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Step 2:<\/b><span style=\"font-weight: 400;\"> The recursive name server contacts the root server.<\/span><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Step 3: <\/b><span style=\"font-weight: 400;\">The root server refers to the recursive server as the top-level domain(TLD).<\/span><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Step 4: <\/b><span style=\"font-weight: 400;\">The recursive server contacts the TLD server.<\/span><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Step 5: <\/b><span style=\"font-weight: 400;\">The recursive server is again referred to as an authoritative name server by the root server.<\/span><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Step 6:<\/b><span style=\"font-weight: 400;\"> The recursive server contacts the authoritative server.<\/span><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Step <\/b><\/span><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong><span style=\"color:#000000\">7:<\/span><\/strong><span style=\"color:#000000\">\u00a0The recursive server receives the final answer from\u00a0<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">the authoritative server.<\/span><\/span><\/li>\n\n\n\n<li><span style=\"color: #000000;\"><b>Step <\/b><\/span><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong><span style=\"color:#000000\">8:<\/span><\/strong><span style=\"color:#000000\">&nbsp;The recursive server resolves the query and directs<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\"> the browser to the destination.<\/span><\/span><\/li>\n<\/ul>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-04c728038200b4c1f944b3f8e61e256d wp-block-paragraph\">All of these steps occur in milliseconds. While the Primary DNS is considered the &#8220;Authoritative Server&#8221; that holds the master record, it doesn&#8217;t work on its own. In modern networks, Primary and Secondary servers often work simultaneously to handle traffic. To ensure data stays consistent, the Primary server uses a Serial Number system; whenever you update a record, this number increases, signalling the Secondary servers to sync the new data.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Benefits_of_Primary_DNS\"><\/span><span style=\"color: #000000;\"><b>Benefits of Primary DNS<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\">Primary DNS <span style=\"font-weight: 400;\">has several advantages. Some of them are explained below:<\/span><\/span><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><span style=\"font-weight: 400; color: #000000;\">DNS servers automatically translate domain names into IP addresses. You never need to remember the numerical address of a site you visit regularly.<\/span><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-736e0b100fca7a85b31dc22631db3871\">DNS servers categorize and store lookup data, which speeds up repeat queries through caching.<\/li>\n\n\n\n<li><span style=\"font-weight: 400; color: #000000;\">Primary DNS servers can be configured with security filters to block known malicious domains before a connection is made. This reduces exposure to phishing sites and malware. It does not replace a full security stack, but it adds a meaningful first layer.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400; color: #000000;\">The DNS servers have a rapid internet connection. The systems installing the DNS servers can leverage these high-speed connections, which is one of the standout factors of the DNS servers.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400; color: #000000;\">Running both a primary and secondary DNS server means your domain stays live even when one server goes down for maintenance or fails unexpectedly.<\/span><\/li>\n<\/ol>\n\n\n\n<!DOCTYPE html>\r\n<html lang=\"en\">\r\n\r\n<head>\r\n    <meta charset=\"UTF-8\">\r\n    <meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\">\r\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\r\n    <title>Document<\/title>\r\n<\/head>\r\n\r\n<style>\r\n    .interestedBtn {\r\n        width: 80% !important;\r\n        box-sizing: border-box !important;\r\n        display: inline-block !important;\r\n        padding: 11px !important;\r\n        border: 1px !important;\r\n        border-color: #ddd !important;\r\n        margin-top: 10px !important;\r\n        background-color: #183e8b !important;\r\n        background-image: none !important;\r\n        text-shadow: none !important;\r\n        color: #fff !important;\r\n        font-size: 14px !important;\r\n        line-height: 20px !important;\r\n        border-radius: 5px !important;\r\n        margin: 0 !important;\r\n        cursor: pointer !important;\r\n        box-shadow: 0px 4.66px 22.99px 0px rgba(0, 0, 0, 0.10);;\r\n    }\r\n\r\n\r\n        .formSec .formSecTwo{\r\n            padding-top: 15px !important;\r\n            margin-bottom: 30px !important;\r\n        }\r\n\r\n\r\n    .tnp-email {\r\n        width: 80% !important;\r\n        box-sizing: border-box;\r\n        padding: 8px 10px;\r\n        display: inline-block;\r\n        border: 1px solid #ced4da;\r\n        background: #fff;\r\n        color: #000 !important;\r\n        font-size: 13px;\r\n        line-height: 20px;\r\n        border-radius: 2px;\r\n        padding-right: 30px;\r\n        margin-bottom: 0px;\r\n    }\r\n\r\n    .formSec {\r\n        border: 1px solid #ced4da;\r\n        float: left !important;\r\n        width: 55% !important;\r\n    }\r\n\r\n    .mainBox {\r\n       \/* border: 1px solid #183e8b;*\/\r\n         background: white;\r\n        max-width: 600px !important;\r\n        margin: 0 auto !important;\r\n        padding: 20px !important;\r\n        font-family: Arial, Helvetica, sans-serif !important;\r\n    }\r\n\r\n    .boxDiv {\r\n        display: flex !important;\r\n    }\r\n\r\n    .boxConsult {\r\n        float: left !important;\r\n        width: 45% !important;\r\n        padding: 10px !important;\r\n    }\r\n\r\n    .formSecTwo {\r\n        text-align:center !important;\r\n        width: 100% !important;\r\n    }\r\n\r\n    .formHeading {\r\n        font-family: Arial, Helvetica, sans-serif;\r\n        margin-top: 0px;\r\n        font-weight: 700;\r\n        line-height: 25px;\r\n        font-size: 18px !important;\r\n        \r\n       margin-bottom: 60px !important;\r\n       color: #000!important;\r\n          margin-top: 5px !important;\r\n    }\r\n\r\n    .fieldHeading {\r\n        margin: 0 !important;\r\n        font-size: 13px !important;\r\n        text-align: left !important;\r\n        margin: 0px 39px 2px 93px !important;\r\n        font-weight: 500 !important;\r\n    }\r\n\r\n    .image {\r\n        max-width:90% !important;\r\n        height: auto !important;\r\n    }\r\n\r\n     .email-icon {\r\n            position: absolute;\r\n            right: 50px;\r\n             top: 20px;\r\n            transform: translateY(-50%);\r\n            pointer-events: none; \r\n        }\r\n\r\n          .email-container{\r\n             position: relative;\r\n         \r\n        }\r\n       \r\n\r\n        .email-icon img{\r\n                 width: 15px;\r\n        }\r\n\r\n\r\n         input::placeholder {\r\n            color:#495057;\r\n        }\r\n\r\n\r\n     ::placeholder {\r\n        color: #495057;\r\n    }\r\n\r\n        ::-ms-input-placeholder { \r\n          color:#495057;\r\n        }\r\n\r\n\r\n        input:-webkit-autofill {\r\n            background-color: transparent !important;\r\n            -webkit-box-shadow: 0 0 0px 1000px white inset !important; \r\n            box-shadow: 0 0 0px 1000px white inset !important;\r\n            color: #495057 !important; \r\n        }\r\n\r\n        \r\n        input {\r\n            color:#495057 !important;\r\n        }\r\n\r\n     .tnp-subscription-minimal {\r\n       float: unset;\r\n      }\r\n\r\n\r\n    @media screen and (max-width: 480px) {\r\n        .boxDiv {\r\n            display: block !important;\r\n            padding: 15px !important;\r\n         \r\n        }\r\n\r\n        .image{\r\n        width: 80% !important;\r\n         margin-bottom: 14px;\r\n        }\r\n        .fieldHeading {\r\n            text-align: left !important;\r\n            margin: unset !important;\r\n        }\r\n\r\n        .boxConsult {\r\n            width: unset !important;\r\n            float: none !important;\r\n        }\r\n\r\n        .mainBox {\r\n            border: unset !important;\r\n        }\r\n\r\n        .formSec {\r\n            float: unset !important;\r\n            width: 100% !important;\r\n        }\r\n\r\n        .formSecTwo {\r\n            text-align: center !important;\r\n        }\r\n\r\n        .tnp-email {\r\n            width: 90% !important;\r\n        }\r\n\r\n        .formHeading {\r\n            margin-bottom: unset !important;\r\n        }\r\n\r\n         .email-icon {\r\n            position: absolute;\r\n            right: 25px;\r\n            top: 58%;\r\n            transform: translateY(-50%);\r\n            pointer-events: none; \/* Make sure the icon doesn't block clicking on the input *\/\r\n        }\r\n       \r\n        .email-container{\r\n             position: relative;\r\n        }\r\n\r\n    }\r\n<\/style>\r\n\r\n<body>\r\n\r\n    <div class=\"mainBox\" box-sizing:=\"\" border-box;=\"\">\r\n\r\n        <div class=\"boxDiv\">\r\n\r\n            <div class=\"boxConsult\">\r\n                <div>\r\n                    <h3 class=\"formHeading\" style=\" font-size: 16px !important;\">\r\n                        Book a Free Demo Call with Our People Security Expert<\/h3>\r\n                <\/div>\r\n                <img decoding=\"async\" src=\"https:\/\/awareness.threatcop.ai\/threatcop_blog\/form.svg\" class=\"image\">\r\n            <\/div>\r\n\r\n            <div class=\"formSec\">\r\n                <div class=\" formSecTwo\">\r\n                    <h4 style=\"margin-top: 0; font-size: 16px !important;\">Enter your details<\/h4>\r\n                    <div class=\"tnp tnp-subscription-minimal\">\r\n                        <form action=\"https:\/\/threatcop.com\/thankyou-blog\" method=\"get\" target=\"_blank\">\r\n                            <div class=\"email-container\" style=\"margin-bottom:20px;\">\r\n\r\n                                <input class=\"tnp-email\" type=\"text\" required=\"\" name=\"FullName\" value=\"\"\r\n                                    placeholder=\"Full Name\">\r\n                                    <span class=\"email-icon\"><img decoding=\"async\" src=\"https:\/\/awareness.threatcop.ai\/threatcop_blog\/icon01.svg\" class=\"img-fluid\" \/><\/span>\r\n                            <\/div>\r\n\r\n                            <div class=\"email-container\" style=\"margin-bottom:20px;\">\r\n                               \r\n                                <input class=\"tnp-email\" type=\"email\" required=\"\" name=\"email\" value=\"\"\r\n                                    placeholder=\"Corporate Email Id\">\r\n                                     <span class=\"email-icon\"><img decoding=\"async\" src=\"https:\/\/awareness.threatcop.ai\/threatcop_blog\/icon02.svg\" class=\"img-fluid\" \/><\/span>\r\n                            <\/div>\r\n\r\n                            <div class=\"email-container\" style=\"margin-bottom:20px;\">\r\n                               \r\n                                <input class=\"tnp-email\" type=\"text\" required=\"\" name=\"CompanyName\" value=\"\"\r\n                                    placeholder=\"Company Name\">\r\n                                    <span class=\"email-icon\"><img decoding=\"async\" src=\"https:\/\/awareness.threatcop.ai\/threatcop_blog\/icon03.svg\" class=\"img-fluid\" \/><\/span>\r\n\r\n                            <\/div>\r\n\r\n                            <div class=\"email-container\">\r\n                               \r\n                                <input class=\"tnp-email\" type=\"number\" required=\"\" name=\"Phone\" value=\"\"\r\n                                    placeholder=\"Phone No.\"><br>\r\n                                    <span class=\"email-icon\"><img decoding=\"async\" src=\"https:\/\/awareness.threatcop.ai\/threatcop_blog\/icon04.svg\" class=\"img-fluid\" \/><\/span>\r\n                            <\/div>\r\n                            <input type=\"hidden\" name=\"BlogForm\" value=\"BlogForm\"><br>\r\n                            <input class=\"tnp-submit interestedBtn\" name=\"submit\" type=\"submit\"\r\n                                value=\"SUBMIT\">\r\n\r\n                        <\/form>\r\n                    <\/div>\r\n                <\/div>\r\n            <\/div>\r\n\r\n        <\/div>\r\n    <\/div>\r\n\r\n<\/body>\r\n\r\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Secondary_DNS\"><\/span><span style=\"color: #000000;\"><b>What is Secondary DNS?<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-bdb84a29e7b327924f8ae1911b43b84e wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">The <\/span><b>secondary <\/b><\/span><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong><span style=\"color:#000000\">DNS\u00a0<\/span><\/strong><span style=\"color:#000000\">server<\/span><\/span> is an authoritative server that receives zone data via zone transfer from the primary server. As a result, the primary DNS and secondary DNS\u00a0<span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">ser<\/span>vers\u00a0are<span style=\"color: #000000;\"><span style=\"font-weight: 400;\"> connected.<\/span><\/span><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-3b9390d94943573087b35b4b4c68b41c wp-block-paragraph\"><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><span style=\"color:#000000\">The essential data stored on the\u00a0<\/span><strong><span style=\"color:#000000\">primary DNS\u00a0<\/span><\/strong><span style=\"color:#000000\">server is duplicated on\u00a0<\/span><strong><span style=\"color:#000000\">secondary DNS\u00a0<\/span><\/strong><span style=\"color:#000000\">servers.<\/span><\/span> Through a process known as zone transfers, this data is frequently copied from the primary to the secondary DNS servers. As a result, there are more DNS servers that can handle user requests for your domain. A backup DNS server will respond to their request if the primary DNS server <span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">is\u00a0unavai<\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">lable.<br><\/span><\/span><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><span style=\"color:#000000\">Also, a\u00a0<\/span><strong><span style=\"color:#000000\">secondary DNS server\u00a0ensures that user requests for your domain are served, even if<\/span><\/strong><span style=\"color:#000000\">\u00a0the\u00a0<\/span><strong><span style=\"color:#000000\">primary DNS<\/span><\/strong><span style=\"color:#000000\">\u00a0server fails<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">. One secondary server may be classified as a high-tier secondary server if multiple secondary servers are in use, so that it can replicate zone file copies to the other secondary DNS servers in the pool.<\/span><\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_does_Secondary_DNS_Work\"><\/span><span style=\"color: #000000;\"><b>How does Secondary DNS Work?<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-195d247d35e37c8244f0b90de146a246 wp-block-paragraph\">Properly configuring Secondary DNS ensures your website remains reachable at all times. Contrary to popular belief, a Secondary DNS isn&#8217;t just a &#8220;dormant backup&#8221; waiting for a failure. It actively shares the traffic load with the Primary server. By using a global footprint, a Secondary DNS provider ensures users are routed to the closest available server, significantly reducing latency and improving page load speeds.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><span style=\"color:#000000\">A\u00a0<\/span><strong><span style=\"color:#000000\">secondary DNS\u00a0<\/span><\/strong><span style=\"color:#000000\">provider\u00a0with<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\"> a global footprint will also ensure that users are always routed to the closest available server, so their requests are responded to as quickly as possible.\u00a0<\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">A precise procedure that explains the working of the <\/span><b>secondary <\/b><\/span><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong><span style=\"color:#000000\">DNS\u00a0<\/span><\/strong><span style=\"color:#000000\">is\u00a0d<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">iscussed below:<\/span><\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-c34d16cdf4a3ae7c97fae6f35c29a69b\"><span style=\"font-weight: 400; color: #000000;\">The first DNS client to receive a query is the DNS recursive resolver. To locate the correct IP addresses, it queries<\/span> other DNS servers. Once the resolver gets a request, it operates as the client&#8217;s representative. It sends queries to the root name servers, the top-level domain (TLD), and the authoritative name servers<span style=\"font-weight: 400; color: #000000;\"> of the other three DNS servers.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400; color: #000000;\">The root name servers are responsible for responding to queries for records in the root zone of the DNS for the Internet. A list of the authoritative nameservers corresponding to the appropriate TLD for a domain name is included in the responses.<\/span><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-b1727781fff0195e59fb8ca3a4085cb1\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">The IP addresses of the second-level domain (SLD) are maintained within the top-level domain (TLD) name servers<\/span><\/span>. The website&#8217;s IP address is then released, and a later request is made to the domain&#8217;s nameservers<span style=\"color: #000000;\"><span style=\"font-weight: 400;\">.<\/span><\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400; color: #000000;\">The nameservers that respond to DNS requests and supply the requisite IP address are known as authoritative nameservers. These nameservers are nearest to the target host or resource.<\/span><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Benefits_of_Secondary_DNS\"><\/span><span style=\"color: #000000;\"><b>Benefits of Secondary DNS<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">Benefits of a domain&#8217;s <\/span><b>secondary <\/b><\/span><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong><span style=\"color:#000000\">DNS&nbsp;<\/span><\/strong><span style=\"color:#000000\">server<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\"> include:<\/span><\/span><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color wp-elements-5ff633934d0992017e0fae37878215b3\"><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">The availability of\u00a0<strong>Secondary DNS\u00a0<\/strong>reduces load on the\u00a0<strong>primary DNS<\/strong>, m<span style=\"color:#000000\">aking\u00a0it easier for customers to access the servers.<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\"><br><\/span><\/span><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-93e5df6a040f6a569f0a738f756be6d9\">Secondary DNS acts as a vital failover. If the Primary DNS is offline due to maintenance or a DDoS attack, the Secondary server continues to resolve queries seamlessly, ensuring zero downtime for your users<span style=\"color: #000000;\"><span style=\"font-weight: 400;\"><br><\/span><\/span><\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color wp-elements-7797323230b42aa7bdc19f1a3849c7a6\">Secondary DNS supports load balancing via round-robin. Each incoming request gets distributed across available servers, preventing any single server from becoming a bottleneck.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Difference_Between_Primary_DNS_and_Secondary_DNS\"><\/span><span style=\"color: #000000;\"><b>Difference Between Primary DNS and Secondary DNS<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\">Both primary and secondary DNS servers store the same data and are active and ready to respond to online requests for a domain. We are still unsure of the difference between primary DNS and secondary DNS servers. Primary DNS servers host the zone files that control them, while secondary DNS servers provide redundancy and reliability.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>S. No.<\/strong><\/td><td><strong>Primary DNS<\/strong><\/td><td><strong>Secondary DNS<\/strong><\/td><\/tr><tr><td><strong>1<\/strong><\/td><td>Contain all the accurate resource records.<\/td><td>Contain zone-file copies that cannot be modified.<\/td><\/tr><tr><td><strong>2<\/strong><\/td><td>Translates a human-readable domain into an IP address.<\/td><td>Provides a backup for the other DNS when the network has issues.<\/td><\/tr><tr><td><strong>3<\/strong><\/td><td>You must have at least one Primary server to host your records.<\/td><td>While technically optional, it is essential for enterprise-grade redundancy.<\/td><\/tr><tr><td><strong>4<\/strong><\/td><td>It contains data about the domain. requested and the IP address as well.<\/td><td>It contains data about a primary DNS server zone.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<div class=\"wp-block-image wp-image-8715 size-full\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"281\" src=\"https:\/\/threatcop.com\/blog\/wp-content\/uploads\/2023\/01\/Picture3.png\" alt=\"primary dns and secondary dns\" class=\"wp-image-8715\"\/><figcaption class=\"wp-element-caption\"><span style=\"color: #000000;\">Relationship between Primary DNS and Secondary DNS (Source: Digicert)<\/span><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"><span class=\"ez-toc-section\" id=\"DNS_Security_Risks_You_Should_Know\"><\/span>DNS Security Risks You Should Know<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7] has-black-color has-text-color has-link-color wp-elements-3cd888d4174834250ca7e836984c5c9c wp-block-paragraph\">DNS misconfigurations are a direct security risk, not just a performance issue. DNS hijacking redirects users to malicious sites without them realising anything is wrong. DNS spoofing injects false records into a resolver&#8217;s cache, serving the wrong IP address to every user until the cache clears. Organisations managing email domains also need correctly configured SPF, DKIM, and <a href=\"https:\/\/threatcop.com\/tdmarc\">DMARC records<\/a>, all of which live in DNS. A broken DNS setup does not just cause downtime; it gives attackers a way in.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final_Thoughts_What_are_Primary_DNS_and_Secondary_DNS\"><\/span><b>Final Thoughts<\/b><b>: What are Primary DNS and Secondary DNS<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-d6b4b0edd5f6ba5e10c94e26effc1051 wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">For a browser application or other device that needs to transform a human-readable hostname into an IP address, a<\/span> <span style=\"font-weight: 400;\">primary DNS server is the first point of contact. This database contains all authoritative data for a domain, including its IP address, the name of the domain administrator, and numerous resource records. DNS records can only be changed by a primary server, such as updating an IP address. The primary server can then update <\/span>secondary <span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\">DNS<\/span>\u00a0servers<span style=\"font-weight: 400;\">. <\/span><\/span><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><span style=\"color:#000000\">One DNS zone&#8217;s\u00a0primary DNS\u00a0serve<\/span><\/span><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">r may be another DNS zone&#8217;s secondary server. <\/span><\/span>Both primary DNS and secondary DNS work together to keep your domain fast, available, and resilient. A primary without a secondary is a single point of failure. A secondary without proper zone transfer configuration is an unreliable backup. Set both up correctly and treat your DNS infrastructure as the security-critical layer it actually is.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">Most people use the internet to access websites by searching for specific domain names; however, computers do not understand these names; they only recognise and use IP addresses to identify and access websites. Despite its importance in allowing us to easily access the websites we want, many people <\/span><span style=\"font-weight: 400;\"><span style=\"box-sizing: border-box; margin: 0; padding: 0; text-align: left;\">give little thought to&nbsp;<a href=\"https:\/\/threatcop.com\/blog\/dns-security\/\" target=\"_blank\" rel=\"noopener\"><strong><span style=\"color: #183994;\">DNS security<\/span><\/strong><\/a> or&nbsp;<\/span>the Domain Name System.<\/span><\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span><b>FAQs<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<style>#sp-ea-14151 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-14151.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-14151.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-14151.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-14151.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-14151.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;}<\/style><div id=\"sp_easy_accordion-1776076999\"><div id=\"sp-ea-14151\" class=\"sp-ea-one sp-easy-accordion\" data-ea-active=\"ea-click\" data-ea-mode=\"vertical\" data-preloader=\"\" data-scroll-active-item=\"\" data-offset-to-scroll=\"0\"><div class=\"ea-card ea-expand sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-141510\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse141510\" aria-controls=\"collapse141510\" href=\"#\" aria-expanded=\"true\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-minus\"><\/i> What is DNS?<\/a><\/h3><div class=\"sp-collapse spcollapse collapsed show\" id=\"collapse141510\" data-parent=\"#sp-ea-14151\" role=\"region\" aria-labelledby=\"ea-header-141510\"> <div class=\"ea-body\"><p><span style=\"color: #000000\">The Domain Name System, or DNS, converts domain names to IP addresses for internet-connected devices such as computers and services. It changes readable domain names into IP addresses. Since computers can only communicate using numerical sequences, the DNS was created as a kind of phonebook that converts the domain you enter in your browser into an IP address.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-141511\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse141511\" aria-controls=\"collapse141511\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> hat are the different kinds of DNS records?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse141511\" data-parent=\"#sp-ea-14151\" role=\"region\" aria-labelledby=\"ea-header-141511\"> <div class=\"ea-body\"><p><span style=\"color: #000000\">A separate file on the DNS server containing all essential mappings between domain names and IP addresses is present. A DNS zone description, or simply a DNS zone, refers to what this file's contents are known as.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-141512\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse141512\" aria-controls=\"collapse141512\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Can a DNS server serve as both the\u00a0primary\u00a0and secondary DNS for the same zone?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse141512\" data-parent=\"#sp-ea-14151\" role=\"region\" aria-labelledby=\"ea-header-141512\"> <div class=\"ea-body\"><p><span style=\"color: #000000\">A DNS server can be configured to act as both primary DNS and secondary DNS for the same zone. This is known as a hidden primary configuration. It can be useful when the zone administrator wants to ensure the zone data is not accidentally modified or deleted on secondary servers.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-141513\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse141513\" aria-controls=\"collapse141513\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Why do we need a secondary DNS?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse141513\" data-parent=\"#sp-ea-14151\" role=\"region\" aria-labelledby=\"ea-header-141513\"> <div class=\"ea-body\"><p>A secondary DNS server serves as a backup for a primary DNS server in case the primary is unavailable or goes offline. This ensures that DNS queries can still be resolved and that the Domain Name System continues to function properly. Additionally, having a secondary DNS can help distribute load on the primary DNS and improve the overall performance of the DNS system.<\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-141514\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse141514\" aria-controls=\"collapse141514\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> How does DNS relate to email security?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse141514\" data-parent=\"#sp-ea-14151\" role=\"region\" aria-labelledby=\"ea-header-141514\"> <div class=\"ea-body\"><p>DNS hosts your SPF, DKIM, and DMARC records. These records verify that emails from your domain are legitimate. Misconfigured DNS is one of the most common reasons organizations become vulnerable to email spoofing and phishing attacks.<\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\">To mark Cybersecurity Awareness Month, Threatcop collaborated with 31 respected CISOs and CTOs from prominent organisations. Together, we&#8217;re working towards a safer digital future. <\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"font-weight: 400; color: #000000;\"><strong>Explore Here: <\/strong><a href=\"https:\/\/threatcop.com\/cybersecurity-awareness-month-video-gallery\">31 Cybersecurity Awareness Ideas from Security Leaders<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Key Takeaways DNS maps domain names to IP addresses for website access. Primary DNS is the authoritative source for creating and updating records. Secondary DNS is a read-only replica that ensures backup and continuity. DNS resolution flows through recursive, root, TLD, and authoritative servers. Using both primary and secondary DNS improves uptime, resilience, and reliability. [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":9583,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-8711","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-miscellaneous"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What are Primary DNS and Secondary DNS? | Threatcop<\/title>\n<meta name=\"description\" content=\"Primary DNS stores all zone records. Secondary DNS is your backup. 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