{"id":1391,"date":"2020-06-07T01:49:30","date_gmt":"2020-06-06T17:49:30","guid":{"rendered":"https:\/\/www.wesbytes.com\/guide\/?post_type=kb&#038;p=1391"},"modified":"2026-01-12T15:06:15","modified_gmt":"2026-01-12T07:06:15","slug":"error-523-origin-is-unreachable","status":"publish","type":"kb","link":"https:\/\/www.servergigabit.com\/guide\/kb\/error-523-origin-is-unreachable","title":{"rendered":"Error 523: Origin is Unreachable"},"content":{"rendered":"<div class=\"mkb-anchor mkb-clearfix mkb-back-to-top-inline\">\n<h3><strong>Error 523: Origin is Unreachable<\/strong><\/h3>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/sitechecker.pro\/wp-content\/uploads\/2023\/09\/what-is-the-523-http-status-code.png\" alt=\"Error 523\" width=\"517\" height=\"283\" \/><\/p>\n<h3 class=\"mkb-anchor__title\"><strong>Changes in DNS settings<\/strong><\/h3>\n<\/div>\n<p>Sometimes host providers update the origin IP information for their customers. In that case, make sure the the new origin IP address for your. A record is reflect in your<a href=\"https:\/\/www.cloudflare.com\/\" rel=\"nofollow noopener\" target=\"_blank\"> Cloudflare <\/a>DNS settings. Wait up to 5 minutes for the change to take effect.<\/p>\n<div class=\"mkb-anchor mkb-clearfix mkb-back-to-top-inline\">\n<h3 class=\"mkb-anchor__title\"><strong>Internet routing problems<\/strong><\/h3>\n<\/div>\n<p>Sometimes internet routing issues occur between Cloudflare\u2019s systems and the origin web server where the site is hosting.<\/p>\n<p>In some cases, the holdup could be with an internet provider sitting. Between your origin and Cloudflare, or with the origin itself. If you are confident the problem isn\u2019t your web hosts. A useful piece of information to give to Cloudflare\u2019s support team is a traceroute between your origin and one of Cloudflare\u2019s IP addresses. Ideally one of the addresses that usually sends requests to your site. See how to run a traceroute test.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter lazyload\" data-src=\"https:\/\/sitechecker.pro\/wp-content\/uploads\/2023\/09\/523-status-code.png\" alt=\"error 523 \" width=\"2858\" height=\"1502\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 2858px; --smush-placeholder-aspect-ratio: 2858\/1502;\" \/><\/p>\n<div class=\"mkb-anchor mkb-clearfix mkb-back-to-top-inline\">\n<h3 class=\"mkb-anchor__title\"><strong>Issues with Cloudflare Railgun<\/strong><\/h3>\n<\/div>\n<p>If you are the customer of a Cloudflare Hosting Partner and you are using their Railgun, you should contact them about this. If you are running your own Railgun, then you should contact Cloudflare Support and provide the most recent syslog file from your Railgun server.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Error 523: Origin is Unreachable Changes in DNS settings Sometimes host providers update the origin IP information for their customers. In that case, make sure the the new origin IP address for your. A record is reflect in your Cloudflare DNS settings. Wait up to 5 minutes for the change to take effect. Internet routing problems Sometimes internet routing issues&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"kbtopic":[43],"kbtag":[1500],"class_list":["post-1391","kb","type-kb","status-publish","hentry","kbtopic-cloudflare","kbtag-error-523"],"_links":{"self":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb\/1391","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb"}],"about":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/types\/kb"}],"author":[{"embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/comments?post=1391"}],"version-history":[{"count":4,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb\/1391\/revisions"}],"predecessor-version":[{"id":6119,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb\/1391\/revisions\/6119"}],"wp:attachment":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/media?parent=1391"}],"wp:term":[{"taxonomy":"kbtopic","embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kbtopic?post=1391"},{"taxonomy":"kbtag","embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kbtag?post=1391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}