Questions
What is the difference between a public and a private IP address?
Inside your home network your device has a private address such as 192.168.1.20. Websites see the public address that your router or mobile network uses for all of its devices, and that is the one shown here.
What is the difference between IPv4 and IPv6?
An IPv4 address is four numbers such as 203.0.113.7. An IPv6 address is longer and written in groups of hexadecimal digits; many connections have both and the browser picks one.
Why is the location wrong?
The location comes from IP address databases, not from GPS. It often shows a city where your provider routes traffic, which can be far from where you are.
How do I change my IP address?
Most home connections get an address that can change when the router restarts. A VPN or switching to mobile data gives you a different public address; check this page again after you switch.