Overview
DNSSEC adds cryptographic validation to DNS. It can improve trust, but incorrect DNSSEC records can make a domain stop resolving.
When to use it
Use DNSSEC when your DNS provider, registrar, and support process can manage it confidently. It is especially useful for domains where tamper-resistant DNS is important.
Common warning
If you change nameservers, remove or update old DS records at the registrar. Stale DS records are a common reason a domain fails after a DNS migration.
DNS troubleshooting flow
- Find the authoritative nameservers first.
- Edit records only at the authoritative DNS provider.
- Check root domain, www, mail, MX, TXT, and any app-specific records.
- Watch for stale IPv6, duplicate SPF, and old mail records.
- Wait for TTL expiry before assuming a change failed.
Quick support handoff
If this article does not solve the issue, open a support ticket with the domain, service name, exact error, time the problem started, and what changed recently.
