The NS, or Name Server records of a domain, reveal which servers manage the Domain Name System (DNS) records for it. Setting the name servers of a given host company for your domain is the easiest way to forward it to their system and all its sub-records are going to be handled 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, so, in case you need to edit some of these records, you are going to be able to do it by using their system. To put it differently, the NS records of a domain address show the DNS servers that are authoritative for it, so when you attempt to open a web address, the DNS servers are contacted to obtain the DNS records of the Internet domain you are attempting to access. In this way the website that you will see will be retrieved from the right location. The name servers typically have a prefix “ns” or “dns” and each and every domain name has at least two NS records. There is no functional difference between the two prefixes, so which one a website hosting provider is going to use depends solely on their preference.