Locate the authoritative name servers for a domain

For web teams checking a launch or tracing a fault, this test provides an immediate point of reference. Locate the authoritative name servers for a domain.

Locate the authoritative name servers for a domain. The result highlights the live configuration and the clues that matter for diagnosis.

How to use

Type the domain name you want to check for authoritative name servers.
Run the test and wait for the answer to appear on the page.
Read the list of name servers returned for that domain.
Check that those host names match the ones configured at your registrar or hosting provider.
After a zone change, run the check again to see whether the new list is already visible.

Example

A domain has just been moved to a new provider and the site is still unreachable. The name servers shown here reveal which hosts still answer for the domain, which helps you tell whether the transfer has really taken effect.

Limits and formats

The test does not reveal whether those name servers answer correctly or hold the right zone, only which ones are advertised.
The list is a snapshot: after a change, an old name server may keep appearing for a while.
Some providers use shared host names, so reading them is not enough to identify the real hosting company.

Where processing happens

Your input is handed to the YOORfree server, which goes out to the public DNS itself and fetches the advertised name servers before showing them to you. No file is sent during the operation.

Frequently asked questions

What is the difference between name servers and mail servers?

Name servers answer DNS questions for the whole domain, while MX records only point to the machines that receive mail. An NS lookup therefore tells you nothing about your email setup.

Why does my domain list name servers I do not recognise?

They usually belong to your hosting company, your registrar or a third-party DNS service you signed up for. Compare them with the details in your account before worrying about them.

How many name servers should a domain publish?

There is no single answer, because the rules of each extension and the advice of each provider differ. This check simply displays the list the domain actually publishes.