What is a public IP address?

Your public IP is the address that identifies your network on the internet.

Is my IP always the same?

Most residential ISPs use dynamic IPs that change periodically.

An IP can reveal your approximate city and ISP, but not your exact address.

IPv6 is the newer IP address format with much more available addresses than IPv4.

Yes, a VPN will show the VPN server's IP, not your real one.

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