A clear guide to network addressing, routing, IPv4, IPv6, and public addresses.
Check your address in practice
Compare your device interface address with the public address shown by My IP. If they differ, NAT or a proxy lies between you and the internet. Local ranges 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16 are not directly internet-routable; 100.64.0.0/10 is shared address space often used for CGNAT.
Check it with Net Utils
Use the relevant Net Utils tool and compare the structured output with your expected configuration. Public network data changes, so confirm important conclusions with a repeat test.