The Guide

Domains and DNS guides

Step-by-step guides to manage DNS records, delegate access safely and keep your domain names under control.

DNS is the address book of your website and your email: a single wrong record can take both offline. These guides explain what each record does, how to change it without downtime and how to give a tool or a colleague only the access it needs.

11 articles

A DNS inventory branches into an active service and an abandoned target to remove.

Domains · 4 min

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Domains and DNS guides

11 articles

Prevent subdomain takeover by auditing dangling DNS records

Fix a website that works with www but not without it

Migrate DNS providers while keeping websites and email working

Set a CAA policy without breaking certificate renewal

Troubleshoot DNSSEC SERVFAIL and verify the chain of trust

Diagnose stale DNS answers after changing a server IP

Enable DNSSEC on an established Cloudflare zone

Choose which DNS records should use the Cloudflare proxy

Set up your first DNS zone on Cloudflare

Review persistent DNS authorization before adopting it

Create a Cloudflare token for a one-domain DNS audit

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