---
title: Troubleshooting · Cloudflare DNS docs
description: The following topics are useful for troubleshooting DNS issues.
lastUpdated: 2025-08-12T17:54:27.000Z
chatbotDeprioritize: false
source_url:
  html: https://developers.cloudflare.com/dns/troubleshooting/
  md: https://developers.cloudflare.com/dns/troubleshooting/index.md
---

The following topics are useful for troubleshooting DNS issues.

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[FAQs — DNS Firewall](https://developers.cloudflare.com/dns/dns-firewall/faq/)

[Troubleshooting DNSSEC](https://developers.cloudflare.com/dns/dnssec/troubleshooting/)

[Available debug endpoints](https://developers.cloudflare.com/dns/troubleshooting/dns-debug-endpoints/)

[General DNS issues](https://developers.cloudflare.com/dns/troubleshooting/dns-issues/)

[Fix DNS\_PROBE\_POSSIBLE error](https://developers.cloudflare.com/dns/troubleshooting/dns-probe-possible/)

[Fix DNS\_PROBE\_FINISHED\_NXDOMAIN](https://developers.cloudflare.com/dns/troubleshooting/dns-probe-finished-nxdomain/)

[Troubleshooting email issues](https://developers.cloudflare.com/dns/troubleshooting/email-issues/)

[General FAQ](https://developers.cloudflare.com/dns/troubleshooting/faq/)

[Cannot verify a domain with CNAME](https://developers.cloudflare.com/dns/manage-dns-records/troubleshooting/cname-domain-verification/)

[Existing NS records block new record creation](https://developers.cloudflare.com/dns/manage-dns-records/troubleshooting/existing-ns-record/)

[Unexpected \_acme-challenge TXT records](https://developers.cloudflare.com/dns/manage-dns-records/troubleshooting/acme-challenge-txt-record/)

[Exposed IP addresses](https://developers.cloudflare.com/dns/manage-dns-records/troubleshooting/exposed-ip-address/)

[Cannot add DNS records with the same name](https://developers.cloudflare.com/dns/manage-dns-records/troubleshooting/records-with-same-name/)

[Stale response for upstream DNS resolution](https://developers.cloudflare.com/dns/manage-dns-records/troubleshooting/stale-response/)

[Troubleshooting full setup](https://developers.cloudflare.com/dns/zone-setups/full-setup/troubleshooting/)

[Cannot add domain to Cloudflare](https://developers.cloudflare.com/dns/zone-setups/troubleshooting/cannot-add-domain/)

[Delete all DNS records](https://developers.cloudflare.com/dns/zone-setups/troubleshooting/delete-all-records/)

[Domain deleted from Cloudflare](https://developers.cloudflare.com/dns/zone-setups/troubleshooting/domain-deleted/)

[Troubleshooting secondary nameservers](https://developers.cloudflare.com/dns/zone-setups/zone-transfers/troubleshooting/)
