DNS and domain guides

Where to start

If you are connecting a domain to a website, read the page on GitHub Pages DNS records and the one on TTL. If email is the problem, read SPF, DKIM and DMARC. To understand a domain lookup, read the pages on RDAP and domain status codes.

This is an independent guide. It is not connected with Cloudflare, Google, ICANN, IANA, GitHub or any registry named here. Facts were read on 14 November 2026 from the documents named on each page. Lookups are made from your browser to the services named in the result.