The NS, or Name Server records of a domain name, reveal which servers manage the Domain Name System (DNS) records for it. Setting the name servers of a particular host company for your domain name is the simplest way to forward 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, so if you wish to modify some of these records, you will be able to do it using their system. To put it differently, the NS records of a domain 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 domain name you are trying to access. In this way the site that you will see will be retrieved from the proper location. The name servers usually have a prefix “ns” or “dns” and each and every domain address has at least two NS records. There is no functional difference between the two prefixes, so what type a host company is going to use depends entirely on their preference.