A similar project that also tracks cell towers and bluetooth beacons in addition to WiFi is https://beacondb.net https://beacondb.net . Since Mozilla Location S

A similar project that also tracks cell towers and bluetooth beacons in addition to WiFi is https://beacondb.net https://beacondb.net . Since Mozilla Location Services shut down they have been a good alternative for geolocation and they are public domain. Unfortunately, data dumps are currently not available, though.