What site are you referring to?

Do you mean this thread: https://support.mozilla.org/questions/1253252

I am locking this thread as a duplicate of https://support.mozilla.org/en-US/questions/1253252

Sorry that you feel that your question there was not answered,but your last response there

The IP on my delegated connection (No Dial up) should be reassigned when it is rebooted. Thanks to all

sounded like a conclusion to that thread.

If you do not get a geolocation request asking to allow access to your location then websites can still use a reverse DNS lookup of your IP. If Geolocation is used then the result of this lookup can differ upon what service is used (not all services have a detailed database) and can be affected by what your ISP reports (gateway IP).