A domain name is a friendly Internet name address that provides an easy way for you to locate people, computers, and resources on the internet (i.e. yourcompany.com). A domain name is a part of a computer hierarchical numbering system that represent IP numbers. IP numbers or addresses are used by computers to find other computers on the Internet. For example, The IP address for yourcompany.com will look like this: 207.158.200.127
Each IP address has four sets of numbers separated by periods. IP addresses range from 4 to 12 digits. Each set of numbers range in value from 0 to 255. Since names are easier to remember than four sets of numbers, the domain name systems was devised.