What is an NS record?
An NS (name server) record allows you to delegate a subdomain of your domain to another name server.
For example you have the domain mydomain.com which is using the Domainmonster.com name servers. You decide that you want your own name server (myns.mydomain.com), for which you have already added an A-record, to look after the DNS for a subdomain on your domain: extranet.mydomain.com.
4 Users Found This Useful