NS Lookup

See the authoritative nameservers for a domain and their IP addresses.

Continue your work

Domain DNS Health Checker — Check whether the nameservers are set up well.
Domain Age Checker — See the registrar and registration dates of the domain.

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Clear instructions

Find steps, examples and limitations below.

Use online

Open the tool in a supported web browser.

Free to use

No sign-up required. Tool-specific limits may apply.

How to use the NS Lookup

See the authoritative nameservers for a domain and their IP addresses.

1 Enter the main domain name, such as example.com.
2 Click Find nameservers.
3 Compare the listed nameservers with the ones your DNS host or registrar told you to use.

Example and practical tips

After moving DNS to Cloudflare, an NS lookup for your domain should list two cloudflare.com nameservers. If the old host’s servers still appear, update the nameservers at your registrar.

Frequently asked questions

What are nameservers?

Nameservers hold the DNS records for a domain and answer questions about it. The registrar tells the top-level domain which nameservers are authoritative.

How many nameservers should a domain have?

At least two, ideally on different networks, so the domain keeps working if one server is unreachable.