ipify is a simple IP address API that provides a fast and reliable way to get the user's public IP address. It offers free and paid plans for developers to integrate the service into their own applications.
MaxMind provides tools and data to identify online users' geolocations, anonymize IP addresses, and detect and prevent fraud using a variety of sources and algorithms including machine learning. MaxMind's databases and APIs are widely used by developers, security professionals, and businesses for a range of purposes such as targeted advertising, content localization, and fraud prevention.