The NS, or Name Server records of a domain name, point out which servers handle the Domain Name System (DNS) records for it. Setting the name servers of a given host company for your domain name is the most effective way to direct it to their system and all its sub-records will 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 forth, so if you need to modify any of these records, you're going to be able to do it via their system. To put it differently, the NS records of a domain name 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 attempting to reach. This way the website that you will see is going to be retrieved from the correct location. The name servers typically have a prefix “ns” or “dns” and each and every domain has at least 2 NS records. There is no practical difference between the two prefixes, so which one a website hosting provider will use depends entirely on their preference.