The last item is the most important because it indicates your record's freshness to other domain name servers on the internet. These are the domain names and IP addresses for the primary records for your domain name. The InterNIC database will query these servers if it gets questions about your website. The addresses are numeric routing addresses which are very much like phone numbers. They identify and connect with a singular machine.
Names are easier to remember and more meaningful.
To establish a name, one registers with InterNIC, an organization set up to act as a domain name registrar. Registrant The administrative entity responsible for registering your domain name. The specific domain name being entered into the InterNIC database record. The individual to whom questions concerning the domain name will be directed. The individual to whom specific routing questions would be directed.