IP address guides.

Clear explanations of the address, network and location in your readout — and what they do not reveal.

• THE BASICSWhat is a public IP address?Understand public and private IP addresses, why your IP changes, and what an IP lookup actually shows.
• LOCATIONWhy is my IP location wrong?Learn why IP geolocation can show a different city and how mobile networks, VPNs and provider routing affect the result.
• NETWORKSIPv4 vs IPv6: what is the difference?Understand the two IP address formats, dual-stack connections, and how to check whether your connection has IPv4, IPv6 or both.
• HOW-TOHow to find your IP address on any deviceFind your public IP and your local network address on Windows, macOS, iPhone, Android and Linux, and learn which one you need.
• THE BASICSPrivate IP address ranges explainedLearn the reserved private, loopback, link-local and shared address ranges, and why they never appear as your public IP.
• NETWORKSWhat is CGNAT and why do I share an IP address?Carrier-grade NAT shares one public IPv4 address between customers. Check if you are behind CGNAT and why it blocks port forwarding and game servers.
• THE BASICSDynamic vs static IP addressesWhy most home and mobile connections change IP address over time, when a static address is useful, and how to tell which you have.
• PRIVACYDoes a VPN change your IP address?How a VPN replaces the public IP websites see, how to test it for WebRTC and IPv6 leaks in two minutes, and what a VPN does not hide.
• PRIVACYIs my VPN working? How to run a VPN leak testCheck whether your VPN hides your real IP: a step-by-step leak test for IPv4, IPv6, WebRTC and DNS, what each result means, and how to fix leaks.
• NETWORKSWhat is an ASN (autonomous system number)?Understand the autonomous system and network organization shown in your IP result, and why the name may not match your provider’s brand.
• PRIVACYWhat can someone do with your IP address?A realistic look at what your public IP reveals, the actual risks, and simple steps that protect your network.