What is DNS?
Discover how DNS converts domain names into IP addresses and why it is often referred to as the "phonebook of the Internet." Familiarize yourself with DNS concepts and terminology.
General FAQ
Find answers to frequently asked questions about DNS.
Understand a CNAME setup (Business or Enterprise domains only)
Utilize Cloudflare services without changing the nameservers for your domain.
Get up and running
Configure your DNS records in Cloudflare
Understand the roles of common DNS records and how to add or remove them using the Cloudflare dashboard.
Update your Cloudflare Nameservers
Learn how to update nameservers with your domain registrar to complete the Cloudflare onboarding process.
Add vendor-specific DNS Records to Cloudflare
Incorporate DNS records into Cloudflare to support third-party applications such as Google Cloud, Amazon S3, Microsoft Azure, ClickFunnels, WPEngine, and Zoho.
Secure your DNS configuration
Get started with DNSSEC
Ensure that your domain's DNS responses correspond with the DNS records published on the nameserver.
Understand DNS Firewall (Enterprise only)
Safeguard your nameservers against DDoS attacks and alleviate load by caching DNS responses at Cloudflare's global data centers.
Hide origin IP addresses
Stop attackers from discovering your origin IP addresses and bypassing Cloudflare's protection.
Customize your DNS configuration
Add Custom Nameservers (Business or Enterprise domains only)
Create custom nameservers rather than using Cloudflare's assigned ones.
Setup and manage Secondary DNS (Enterprise only)
Edit DNS records on nameservers not managed by Cloudflare. Allow changes to automatically synchronize with Cloudflare's nameservers.
Troubleshoot
DNS troubleshooting FAQ
Discover answers to typical DNS problems.
Troubleshoot DNSSEC
Identify DNSSEC issues that could impact DNS resolution.
Why was my domain deleted from Cloudflare?
Recover a domain that has been removed from a Cloudflare account. Understand the reasons behind the deletion to prevent future occurrences.
My DNS doesn't work
Determine the cause of DNS failures.
I cannot add my domain to Cloudflare…
Learn about common reasons that prevent a domain from being added to a Cloudflare account.
Email undeliverable when using Cloudflare
Resolve email delivery issues for a domain registered with Cloudflare.