DNS - Server (nameserver)

About

A nameserver is a server (host) where a name service (generally DNS) program is running.

A name server is organized in namespace information unit called ZONEs that manages DNS information for an apex domain. They may be also an AUTHORITY for one or more zone.

Management

Set

You set your nameserver by updating the NS record

Update

Before updating your DNS server when you want to move one's domain from one registrar to another., you can check that the DNS server have a good configuration.

This is called an undelegated domain test (ie when this is not your actual public/published DNS).

For example, if you want to move your zone example.com from the nameserver “ns.example.com” to the nameserver “ns.example.org”.

Check

The https://zonemaster.fr/ of AFNIC can check the configuration of the primary and secondary DNS server:

  • actual
  • or before switching to them (option)

List

The nameserver are designed by the NS record that you can query

For instance:

nslookup -type=NS example.com 
dig -t ns DOMAIN

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