The NS, or Name Server records of a domain
, show which servers manage the Domain Name System (DNS) records for it. Setting the name servers of a given hosting provider for your domain is the simplest way to point it to their system and all its sub-records are going to be taken care of on their end. This includes A (the IP address of the server/website), MX (mail server), TXT (free text), SRV (services), CNAME (forwarding), and so on, if you would like to change any of these records, you'll be able to do it through their system. To put it differently, the NS records of a domain show the DNS servers which are authoritative for it, so when you attempt to open a web address, the DNS servers are contacted to retrieve the DNS records of the domain you are attempting to access. In this way the website you'll see is going to be retrieved from the right location. The name servers typically have a prefix “ns” or “dns” and each domain name has at least 2 NS records. There is no functional difference between the two prefixes, so what type a web hosting provider will use depends exclusively on their preference.