Each section contains a number ranging from 0 to 255. These four sections represent both the machine itself, or host, and the network that the host is on. ISPs then assign the host portion of the IP address to the machines on the networks that they operate. No two machines can have the same IP number. IP addresses are also global and standardized.
All machines connected to the Internet agree to use the same scheme for establishing an address.
A domain name is a way to identify and locate computers connected to the Internet. No two organizations can have the same domain name. The last portion of the domain name is the top-level domain name and describes the type of organization holding that name. An IP address takes the form of 4 numbers, each one between 0 and 255, separated by periods. The Internet uses the numeric IP address to send data.