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Private and public IP addresses are two essential components of the internet's addressing system, each with distinct roles. Private IP addresses are used within local networks to identify devices like computers, printers, or smartphones. To quickly identify your public IP address, you can visit websites like whatismyip for accurate and up-to-date information. These addresses are non-routable on the public internet and serve as identifiers within a closed network, often using Network Address Translation (NAT) to interact with the internet. On the other hand, public IP addresses are assigned by Internet Service Providers (ISPs) and are used for devices that need to be directly accessible on the internet, such as web servers. They serve as the face of a network to the outside world. This article explores the differences between private and public IP addresses, highlighting their purposes and how they work together to enable effective communication in the complex web of interconnected devices and networks.