The Name Servers of a domain show the DNS servers that manage its DNS records. The Internet protocol address of the website (A record), the mail server that handles the e-mails for a domain name (MX records), any text record in free form (TXT record), forwarding (CNAME record) and so forth are obtained from the DNS servers of the hosting company and for any domain to be using them and to be directed to their hosting platform, it has to have their name servers, or NS records. If you would like to open a website, for instance, and you enter the URL, the Internet browser connects to a DNS server, which keeps the NS records for the domain and the request is then pointed to the DNS servers of the hosting company where the A record of the website is obtained, allowing you to view the content from the right location. Normally a domain name has two name servers that start with NS or DNS as a prefix and the contrast between the two is simply visual.