Nameserver Lookup
List a domain's authoritative nameservers and their IP addresses.
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Enter a domain above and press Run to start the check.
About the Nameserver Lookup
Nameserver Lookup lists the authoritative nameservers responsible for a domain and resolves each one to its IP address. These are the servers delegated to answer queries for the zone, so confirming them is essential when transferring DNS hosting or diagnosing delegation issues. Seeing the nameservers and their IPs together helps verify that delegation matches your provider's expected values.
How to use
- Enter the domain whose nameservers you want to find.
- Run the lookup to list the authoritative NS records.
- Review each nameserver and its resolved IP address for accuracy.
Frequently asked questions
- What is an authoritative nameserver?
- An authoritative nameserver holds the definitive DNS records for a zone and answers queries about it. Delegation in the parent zone points to these servers.
- Why check nameserver IP addresses?
- Resolving each nameserver to its IP confirms the servers are reachable and helps detect lame delegations or stale glue records.
- When should I review my nameservers?
- Check them after changing DNS providers, transferring a domain, or whenever resolution behaves unexpectedly, to confirm delegation is correct.