Knowledgebase

NS (Name Server) Record

NS Records identify the DNS servers responsible (authoritative) for a Zone. A Zone should contain one NS Record for each of its own DNS servers (primary and secondary). This mostly is used for Zone Transfer purposes (notify). These NS Records have the same name as the Zone in which they are located.

The most important function of the NS Record is Delegation. Delegation implies that part of a domain is delegated to other DNS servers.

You can also delegate sub-domains of your own domain name (such as subdomain.yourdomainname.com) to other DNS servers. An NS Record identifies the name of a DNS servernot the IP Address. Because of this, it is important that an A Record for the referenced DNS server exists, otherwise, there may not be any way to find that DNS server and communicate with it.

If an NS Record delegates a sub-domain (subdomain.yourdomainname.com)to a DNS Server with a name in that sub-domain (ns1.subdomain.yourdomainname.com), an A Record for that server(ns1.subdomain.yourdomainname.com) must exist in the Parent Zone (yourdomainname.com). This A Record is referred to as a Glue Record, because it doesn't really belong in the Parent Zone, but is necessary to locate the DNS Server for the delegated sub-domain.

  • 0 Users Found This Useful
     Was this answer helpful?

Related Articles

 TXT (Text) Records

TXT Records provide the ability to associate some text with a domain or a sub-domain. This text is meant to strictly provide information and has no functionality as such. A TXT Record can store up to 255 characters of free form text. This Record...

 What is DNS?

The Domain Name System (DNS) is a distributed database, arranged hierarchically, containing records for domain names. The DNS system's main aim is to match a domain name to an IP Address. In order to fulfill this role,...

 SRV (Service) Record

An SRV or Service Record is a category of data in the DNS specifying information on available services. When looking up for a service, you must first look up the SRV Record for the service to see which server actually handles it. Then it looks up...

 A (Address ~ IPv4) Record

This Record is used to translate a domain name to an IP Address.

 CNAME (Canonical Name) Record

CNAME Records are domain name aliases. Often computers on the Internet have multiple functions such as Web Server, FTP Server, Chat Server, etc.. To mask this, CNAME Records can be used to give a single computer multiple names (aliases)....

Powered by WHMCompleteSolution