*Mobile 3G/4G data networks are reusing those IPs, so at best you'll get a count...

Mobile 3G/4G data networks are reusing those IPs, so at best you'll get a country or state-level accuracy.

If you're lucky. Right now I'm on a Verizon connection that reports me being in New Mexico.

My phone's AT&T connection currently says I'm in Los Angeles.

I'm half a continent away from either of those places.