What is an IP address?

An IP address is a unique number used by devices (such as a wireless printer, computer, or access point (wireless router)) on an IP network to locate and communicate with each other. Devices on an IP network can communicate with each other only if they have unique and valid IP addresses. A unique IP address means no two devices on the same network have the same IP address.

An IP address is a group of four numbers separated by periods. An example of an IP address is 123.123.123.123.