https://www.airdroid.com/parent-control/track-cell-phone-location-free/
Method 1. Top 8 Location Trackers to Track a Cell Phone Location for Free - 1Find My Device (Android) - 2AirDroid Family Locator (Android) - 3Where's My Droid ( ...

https://www.ipqualityscore.com/free-phone-number-lookup
Free phone number lookup service for mobile, landline, and VOIP numbers. Lookup phone number details like carrier, line type, location, name, and more.

https://www.apple.com/icloud/find-my/
One app to find it all. - See where everyone is on a map. Live Locations lets you share your location with friends and family in real time for an hour, a day, ...