The Name Servers of a domain name point out the DNS servers that handle its DNS records. The IP of the web site (A record), the mail server that manages the e-mails for a domain address (MX records), any text record in free form (TXT record), directing (CNAME record) and so forth are extracted from the DNS servers of the hosting provider and for any domain name to be using them and to be pointed to their hosting platform, it ought to have their name servers, or NS records. If you wish to open an Internet site, for instance, and you type in the URL, the browser connects to a DNS server, which keeps the NS records for the domain and the request is then redirected to the DNS servers of the hosting provider where the A record of the site is obtained, enabling you to see the content from the right location. Usually a domain name has two name servers that start with NS or DNS as a prefix and the contrast between the two is just visual.