Troubleshooting

The following topics are useful for troubleshooting DNS issues.

Resource	Location	Type
FAQs — DNS Firewall · Cloudflare DNS docs	DNS Firewall	FAQ
Troubleshooting DNSSEC · Cloudflare DNS docs	DNSSEC	Troubleshooting
Cannot verify a domain with CNAME · Cloudflare DNS docs	DNS records > DNS records	Troubleshooting
Existing NS records block new record creation · Cloudflare DNS docs	DNS records > DNS records	Troubleshooting
Exposed IP addresses · Cloudflare DNS docs	DNS records > DNS records	Troubleshooting
Cannot add DNS records with the same name · Cloudflare DNS docs	DNS records > DNS records	Troubleshooting
General DNS issues · Cloudflare DNS docs	Troubleshooting	Troubleshooting
Fix DNS_PROBE_FINISHED_NXDOMAIN · Cloudflare DNS docs	Troubleshooting	Troubleshooting
Fix DNS_PROBE_POSSIBLE error · Cloudflare DNS docs	Troubleshooting	Troubleshooting
Troubleshooting email issues · Cloudflare DNS docs	Troubleshooting	Troubleshooting
General FAQ · Cloudflare DNS docs	Troubleshooting	FAQ
Troubleshooting full setup	Zone setups > Zone setups	Troubleshooting
Cannot add domain to Cloudflare	Zone setups > Zone setups	Troubleshooting
Delete all DNS records	Zone setups > Zone setups	Troubleshooting
Domain deleted from Cloudflare	Zone setups > Zone setups	Troubleshooting
Troubleshooting secondary nameservers	Zone setups > Zone setups	Troubleshooting

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