{"id":4263,"date":"2024-07-05T00:24:32","date_gmt":"2024-07-04T23:24:32","guid":{"rendered":"https:\/\/www.lrob.fr\/?p=4263"},"modified":"2025-10-12T01:36:26","modified_gmt":"2025-10-11T23:36:26","slug":"dns-essentials-in-2-minutes","status":"publish","type":"post","link":"https:\/\/www.lrob.fr\/en\/blog\/internet\/lessentiel-sur-les-dns-en-2-minutes\/","title":{"rendered":"DNS essentials - In 2 minutes"},"content":{"rendered":"<p><strong>Every web player needs to master these points!<\/strong><\/p>\n\n\n\n<p>By mastering DNS, you can <strong>FREE<\/strong> with your websites and domain names! \ud83d\udc47<\/p>\n\n\n\n<p>Learn the essentials in 2 intense, effective minutes instead of a boring 3-hour course. \ud83e\udd2f<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is the DNS system?<\/h2>\n\n\n\n<p>\ud83d\udcc4 The Domain Name System is the digital highway that makes a domain name (e.g. lrob.fr or google.com) accessible. Basically, the domain is \"pointed\" to a destination.<\/p>\n\n\n\n<p>Examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If you visit a domain like lrob.fr, your web browser makes a DNS resolution request in the background to find out the IP address of the server hosting the site.<\/li>\n\n\n\n<li>When you send an e-mail, further requests are made to find the destination mail server and authenticate the sender.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How does the DNS system work?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1 - Registrar \ud83c\udfe2<\/h3>\n\n\n\n<p>Domain names such as lrob.fr are registered with a \"registrar\" such as HaiSoft, Gandi, NameCheap, OVH and others.<\/p>\n\n\n\n<p>Each registrar must go through a \"registry\" that is the authority for domain name extensions. For example :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>.en<\/strong> AFNIC<\/li>\n\n\n\n<li><strong>.com<\/strong> \/ <strong>.net<\/strong> Verisign<\/li>\n\n\n\n<li><strong>.org<\/strong> Public Interest Registry (PIR)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2 - NS (Name Servers) \ud83c\udf0d<\/h3>\n\n\n\n<p>To make a domain \"resolvable\" (accessible), it must have \"name servers\" or NS (Name Servers).<\/p>\n\n\n\n<p>NSs contain the domain's pointing information and are said to be \"authoritative\". Always define at least two NS for redundancy. The registrar sends this information to the registry.<\/p>\n\n\n\n<p>\u2139\ufe0f The domain owner (\"registrant\") is free to use the NS of his choice, or even to create his own, using values called Glue Records.<\/p>\n\n\n\n<p>Various providers exist and you can create your own directly with a little knowledge. This is the case, for example, with lrob.net, my infrastructure domain with a complete autonomous DNS system supplied to all hosted customers to centralize their DNS management independently of the registrar used. How convenient!<\/p>\n\n\n\n<p><a href=\"https:\/\/www.lrob.fr\/en\/doc\/dns\/ns-name-servers\/\" target=\"_blank\" rel=\"noreferrer noopener\">More about Name Servers<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3 - DNS zone \ud83c\udf10<\/h3>\n\n\n\n<p>\u26a0\ufe0f This is what you absolutely must master!<\/p>\n\n\n\n<p>NS servers contain the domain's DNS zone. It is this DNS zone that contains the actual pointing values.<\/p>\n\n\n\n<p>For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>the IP of the server hosting the site<\/li>\n\n\n\n<li>IP or host name of mail server<\/li>\n\n\n\n<li>Meta-information such as the list of servers authorized to send mail for a domain.<\/li>\n<\/ul>\n\n\n\n<p>Discover <a href=\"https:\/\/www.lrob.fr\/en\/doc\/dns\/dns-zone\/\">all possible DNS values and how to manage your DNS zone <\/a>via LRob.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What do we do with all this?<\/h2>\n\n\n\n<p>You're now free to register a domain name with any registrar, to manage your NS (and therefore your DNS zone) wherever you like. And your sites and e-mails can be placed with as many different providers as you like, with complete freedom thanks to DNS zone settings!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>To never go wrong with your DNS, choose a <a href=\"https:\/\/www.lrob.fr\/en\/web-hosting\/\">Hosting LRob<\/a> ! \ud83d\udcaa<br>I can help you with all your web challenges! \ud83e\udd1d<\/p>\n\n\n\n<p>You have 1 site: Choose one <a href=\"https:\/\/portail.lrob.fr\/produit\/hebergement-wordpress\/\" target=\"_blank\" rel=\"noopener\">WordPress Hosting<\/a>.<br>You have between 8 and 128 sites: Choose one <a href=\"https:\/\/portail.lrob.fr\/produit\/hebergement-web-agency\/\" target=\"_blank\" rel=\"noopener\">Web Agency Hosting<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Tout acteur du web doit absolument ma\u00eetriser ces points ! En ma\u00eetrisant les DNS, vous serez LIBRES avec vos sites web et noms de domaine ! \ud83d\udc47 Apprenez l&rsquo;essentiel en 2 minutes intenses et efficaces au lieu d&rsquo;un cours barbant de 3h. \ud83e\udd2f Qu&rsquo;est-ce que le syst\u00e8me DNS ? \ud83d\udcc4 Le Domain Name System est [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4264,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,5],"tags":[],"class_list":["post-4263","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internet","category-blog"],"_links":{"self":[{"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/posts\/4263","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/comments?post=4263"}],"version-history":[{"count":3,"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/posts\/4263\/revisions"}],"predecessor-version":[{"id":8378,"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/posts\/4263\/revisions\/8378"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/media\/4264"}],"wp:attachment":[{"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/media?parent=4263"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/categories?post=4263"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lrob.fr\/en\/wp-json\/wp\/v2\/tags?post=4263"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}