The NS (Name Server) records of a domain show which DNS servers are authoritative for its zone. Simply, the zone is the collection of all records for the domain address, so when you open a URL inside a browser, your computer asks the DNS servers worldwide where the domain name is hosted and from which servers the DNS records for the domain address ought to be retrieved. That way a browser finds out what the A or AAAA record of the domain address is so that the latter is mapped to an IP and the website content is required from the right location, a mail relay server detects which server manages the emails for the domain (MX record) so a message can be forwarded to the correct mailbox, etc. Any change of these sub-records is done with the help of the company whose name servers are employed, so you can keep the website hosting and switch only your email provider for example. Each domain has at least two NS records - primary and secondary, which start with a prefix like NS or DNS.
NS Records in Web Hosting
If you use a web hosting from our us and you include a new domain name in the account or transfer an existing one from another provider, you're going to be able to handle its NS records effortlessly through the Hepsia hosting Control Panel, offered with all shared accounts. You'll be able to change the current name servers or enter additional ones for a single domain name or even for many domains at a time with several clicks. This is done through the feature-rich Domain Manager tool that is a part of Hepsia and the user-friendly interface is going to make it easy to manage your domain name even if it's the first one you have ever registered. It requires merely a click to see what name servers a domain uses at the moment or if they're the correct ones to point a domain address to the hosting space on our end and with a few mouse clicks more you'll even be able to register private name servers for any one of the domain names that you own. For the latter option you can use the IP addresses of each and every company that you want the new NS records to direct to.