Troubleshooting
The following topics are useful for troubleshooting DNS issues.
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FAQs — DNS Firewall
Troubleshooting DNSSEC
FAQ
Cannot verify a domain with CNAME
Existing NS records block new record creation
Exposed IP addresses
Cannot add DNS records with the same name
Stale response for upstream DNS resolution
Unexpected DNS records
Troubleshooting
Enforce DNS-only
Available debug endpoints
General DNS issues
Fix DNS_PROBE_FINISHED_NXDOMAIN
Fix DNS_PROBE_POSSIBLE error
Troubleshooting email issues
Troubleshooting primary setup (full)
Cannot add domain to Cloudflare
Delete all DNS records
Domain deleted from Cloudflare
Zone stuck in Pending Nameserver Update
Troubleshooting secondary nameservers