{"id":3627,"date":"2024-07-30T08:52:21","date_gmt":"2024-07-30T06:52:21","guid":{"rendered":"https:\/\/mijn.host\/blog\/hvad-er-en-cname\/"},"modified":"2026-09-16T12:07:57","modified_gmt":"2026-09-16T10:07:57","slug":"hvad-er-en-cname","status":"publish","type":"post","link":"https:\/\/my.host\/blog\/dk\/hvad-er-en-cname\/","title":{"rendered":"Hvad er en cname?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">En CNAME, ogs\u00e5 kendt som &#8220;Canonical Name record&#8221;, er en type <a href=\"https:\/\/my.host\/blog\/wat-is-dns\/\">DNS <\/a>(Domain Name System) record, der bruges til at tildele et navn til et dom\u00e6nenavn. Inden for en s\u00e5kaldt &#8220;DNS zone&#8221; for en bestemt IP-adresse er der flere navne, der indeholder A-records.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En CNAME-record peger et specifikt dom\u00e6nenavn til et andet dom\u00e6nenavn. En A-record derimod peger p\u00e5 en IP-adresse. A-recordet og CNAME-recordet er forbundne. Denne forbindelse ligger i det faktum, at det v\u00e6rtsnavn, som CNAME-recordet peger p\u00e5, bliver oversat til den rigtige IP-adresse via en A-record.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CNAME&#8217;er bruges ofte til at lade forskellige subdom\u00e6ner pege p\u00e5 den samme hovedside uden at du skal administrere IP-adresserne individuelt.<\/p>\n\n\n\n<h2 id=\"hvordan-bruges-cnamerecordet\" class=\"wp-block-heading\">Hvordan bruges CNAME-recordet?<\/h2>\n\n\n\n<h3 id=\"www-til-hoveddomaene\" class=\"wp-block-heading\"><strong>www til hoveddom\u00e6ne:<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Antag at dit hoveddom\u00e6ne er <strong>dit-dom\u00e6ne.dk<\/strong>, og du \u00f8nsker at <strong>www.dit-dom\u00e6ne.dk<\/strong> ogs\u00e5 skal pege p\u00e5 dette site. Du kan s\u00e5 ops\u00e6tte et CNAME-record, s\u00e5 <strong>www.dit-dom\u00e6ne.dk<\/strong> peger p\u00e5 <strong>dit-dom\u00e6ne.dk<\/strong>.<\/li>\n\n\n\n<li>Subdom\u00e6ner til hoveddom\u00e6ne:\n<ul class=\"wp-block-list\">\n<li>Hvis du har subdom\u00e6ner s\u00e5som blog.dit-dom\u00e6ne.dk eller shop.dit-dom\u00e6ne.dk, kan du bruge et CNAME-record til at lede de subdom\u00e6ner til dit hoveddom\u00e6ne.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 id=\"eksempel-pa-et-cnamerecord\" class=\"wp-block-heading\"><strong>Eksempel p\u00e5 et CNAME-record:<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-base-background-color has-background has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Navn<\/th><th class=\"has-text-align-left\" data-align=\"left\">Type<\/th><th class=\"has-text-align-left\" data-align=\"left\">V\u00e6rdi<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">www<\/td><td class=\"has-text-align-left\" data-align=\"left\">CNAME&nbsp; &nbsp; &nbsp; &nbsp; <\/td><td class=\"has-text-align-left\" data-align=\"left\">dit-dom\u00e6ne.dk.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">blog<\/td><td class=\"has-text-align-left\" data-align=\"left\">CNAME&nbsp; &nbsp; &nbsp; &nbsp; <\/td><td class=\"has-text-align-left\" data-align=\"left\">dit-dom\u00e6ne.dk.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><br><br>Begr\u00e6nsninger af CNAME-records<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CNAME records er allerede n\u00e6vnt, specifikt rettet mod bestemte opgaver. Alligevel er der nogle begr\u00e6nsninger for CNAME-recordet. For eksempel kan det ikke bruges p\u00e5 roddom\u00e6net. Dette skyldes, at det vil v\u00e6re i konflikt med andre DNS-records som f.eks. MX-records til e-mail.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ogs\u00e5 kompleksiteten kan v\u00e6re en faktor. Overforbrug af CNAME-records kan g\u00f8re visse DNS-konfigurationer mere komplicerede, hvilket g\u00f8r dem sv\u00e6rere at administrere. Essensen af CNAME-recordet g\u00e5r tabt, da det prim\u00e6rt handler om enkel, centraliseret administration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kort sagt, en CNAME-record er en v\u00e6rdifuld og fleksibel m\u00e5de at administrere og omdirigere dom\u00e6nenavne, men den b\u00f8r anvendes med omhu for at undg\u00e5 mulige problemer.<\/p>\n\n\n\n<div class=\"wp-block-group has-base-background-color has-background has-global-padding is-layout-constrained wp-container-core-group-is-layout-f4463924 wp-block-group-is-layout-constrained\" style=\"border-radius:8px;margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40);padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-461897f4 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:15%\">\n<svg style=\"max-width:50px\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0.04 0.04 16.24 16.12\">\n    <g clip-path=\"url(#clip0_474_4172)\">\n        <path d=\"M9.52521 16.151C13.2539 16.151 16.2766 13.1283 16.2766 9.39959C16.2766 5.6709 13.2539 2.64819 9.52521 2.64819C5.79651 2.64819 2.7738 5.6709 2.7738 9.39959C2.7738 13.1283 5.79651 16.151 9.52521 16.151Z\" fill=\"#CCEDFD\"\/>\n        <path d=\"M7.53644 14.2878C11.2651 14.2878 14.2878 11.2651 14.2878 7.53644C14.2878 3.80774 11.2651 0.785034 7.53644 0.785034C3.80774 0.785034 0.785034 3.80774 0.785034 7.53644C0.785034 11.2651 3.80774 14.2878 7.53644 14.2878Z\" stroke=\"#003F5D\" stroke-width=\"1.5\" stroke-miterlimit=\"10\"\/>\n        <path d=\"M7.5365 14.2878C8.93549 14.2878 10.0696 11.2651 10.0696 7.53644C10.0696 3.80774 8.93549 0.785034 7.5365 0.785034C6.13752 0.785034 5.00342 3.80774 5.00342 7.53644C5.00342 11.2651 6.13752 14.2878 7.5365 14.2878Z\" stroke=\"#003F5D\" stroke-width=\"1.5\" stroke-miterlimit=\"10\"\/>\n        <path d=\"M14.2983 7.5365H0.785034\" stroke=\"#003F5D\" stroke-width=\"1.5\" stroke-miterlimit=\"10\"\/>\n    <\/g>\n<\/svg>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-secondary-color has-text-color wp-block-paragraph\" style=\"margin-top:0;margin-bottom:0\"><strong>Domeinnaam bestellen?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"margin-top:0;margin-bottom:0\">Een goede naam zorgt voor een goede website.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/my.host\/domeinnaam\/?utm_source=my.host&amp;utm_medium=blog&amp;utm_content=cta\" target=\"_blank\" rel=\"noreferrer noopener\">Bestel nu<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>En CNAME, ogs\u00e5 kendt som &#8220;Canonical Name record&#8221;, er en type DNS (Domain Name System) record, der bruges til at tildele et navn til et dom\u00e6nenavn. Inden for en s\u00e5kaldt &#8220;DNS-zone&#8221; for en bestemt IP-adresse er der flere navne, der indeholder A-records. En CNAME-record peger et specifikt dom\u00e6nenavn mod en anden [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1370,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"hide_cta_migrate_site":false,"hide_toc_block":false,"footnotes":""},"categories":[625],"tags":[599,578],"class_list":["post-3627","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tips-og-tricks","tag-dns","tag-domaenenavn"],"lang":"da","translations":{"da":3627,"sv":3840,"nl":1369,"nb":3749,"en":3254},"pll_sync_post":{},"_links":{"self":[{"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/posts\/3627","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/comments?post=3627"}],"version-history":[{"count":1,"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/posts\/3627\/revisions"}],"predecessor-version":[{"id":4079,"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/posts\/3627\/revisions\/4079"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/media\/1370"}],"wp:attachment":[{"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/media?parent=3627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/categories?post=3627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/my.host\/blog\/wp-json\/wp\/v2\/tags?post=3627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}