For example, is a Domain/web address.

Domains are unique names formed with letters and numbers. They are used to link network addresses (IP addresses) and they are easy to read and remember comparing to IP addresses.

Domain can be 3-60 characters long and can contain letters from a to z, numbers from 0 to 9 and a – sign.

Domain is formed from prefix, main address and a suffix. Most common prefix is www. Web pages need a domain and a server to function.