What is an IP address?
A clear, jargon-free explanation of what an IP address is, how your ISP assigns one, what it reveals about you, and why it changes.
7 min read
Knowledge base
IP address guides
Straightforward explanations of how IP addressing, geolocation and anonymisation really work — written for people who want an answer, not a sales pitch.
Public vs private IP addresses
Learn the difference between public and private IP addresses, which ranges are reserved, how NAT connects them, and how to find each one on your network.
6 min read
IPv4 vs IPv6
Compare IPv4 and IPv6 addressing: format, address space, NAT, security, speed and how to check whether your connection already supports IPv6.
6 min read
How to hide your IP address
VPNs, proxies, Tor, mobile data and public Wi-Fi compared for hiding your IP — plus how to test for DNS, IPv6 and WebRTC leaks afterwards.
8 min read
Check any other IP address
Investigating a suspicious login, a spam email header or a server log entry? Run any IPv4 or IPv6 address through the same geolocation and proxy checks.