How to

• Warning about exposing your origin IP address via DNS records
• Certification Authority Authorization (CAA) FAQ

Troubleshooting

• Cloudflare DNS FAQ
• Error when adding Secondary Nameservers nsXXXX.secondary.cloudflare.com at Registrar
• Email undeliverable when using Cloudflare
• My DNS doesn't work
• I cannot add my domain to Cloudflare
• DNS Troubleshooting FAQ

See all 7 articles

Advanced topics

• Understanding Secondary DNS Override
• Delegating Subdomains Outside of Cloudflare
• Adding vendor-specific DNS records to Cloudflare
• Configuring Secondary DNS

DNSSEC

• Troubleshooting DNSSEC