Free nameserver checker · Instant · No signup
Nameserver Checker
Check your nameservers and DNSSEC. Domain Doctor confirms you have at least two working nameservers and reports whether DNSSEC is signing your zone.
VASTROX HOSTING · EMAIL · DNS · SSL
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What this checks
Your nameservers answer every DNS query for your domain. Best practice is at least two, ideally on different networks, so a single outage does not take your whole domain — website and email — offline.
Domain Doctor lists your NS records, checks you have redundancy, identifies the provider, and reports whether DNSSEC is enabled to cryptographically protect your DNS answers from tampering.
Common Nameserver Checker errors
- Only one nameserver (no redundancy)
- Nameservers at the registrar not matching the zone
- DNSSEC enabled but broken (SERVFAIL)
- Lame delegation to a nameserver that does not answer
VASTROX DNS & HOSTING
Redundant, validated DNS delegation
VASTROX runs your DNS across multiple nameservers with clean delegation and optional DNSSEC.
- Multiple redundant nameservers
- Clean parent/child delegation
- DNSSEC signing available
Trusted by businesses for hosting, VPS, business email & game servers · Free migration · Real support
Frequently asked questions
How many nameservers should I have?
At least two, and ideally on separate networks or providers, so your domain stays resolvable if one goes down.
What is DNSSEC?
DNSSEC cryptographically signs your DNS records so resolvers can detect tampering. It is optional but adds strong integrity protection when configured correctly.