An IP address (Internet Protocol address) is a unique string of numbers that identifies a device on a network, like a computer or smartphone. It functions like a home address, allowing data to be sent and received over the internet. Each device connected to the internet has its own IP address, which helps route information to the correct destination. There are two main types of IP addresses: IPv4 and IPv6. IPv4 addresses are made up of four sets of numbers, while IPv6 addresses are longer and designed to accommodate the growing number of devices online. As more people use the internet, the need for unique IP addresses continues to increase.