Everything you need to know about IP addresses and their function. An IP address is a unique numerical identifier assigned to each device connected to a network. It allows devices to communicate with each other over the internet. There are two types of IP addresses: IPv4 and IPv6. IPv4 addresses are 32-bit numbers, while IPv6 addresses are 128-bit numbers. IP addresses are essential for routing data across the internet. They help identify the source and destination of data packets, ensuring they reach the correct location.