IPCheckMe shows what the internet sees about a connection: the public IP address, where it is registered, which network owns it and how a browser presents itself.
Location and network data come from the DB-IP Lite databases, licensed under Creative Commons Attribution 4.0. DNS answers come live from public resolvers when a page is opened.
Proxy checks run from the Cloudflare edge. The tool connects to the proxy, asks for the exit address and closes the connection. Nothing you type is saved.