IP guides
Clear answers to the questions people ask most about IP addresses and visitor IPs.
How to detect VPN and proxy visitors on your website
A step by step way to check for VPN, Tor and data center connections at key moments such as sign-up, login and payment, and decide how to respond.
Get the real visitor IP behind Cloudflare or a load balancer
How a server behind a proxy can safely get the visitor's real IP, with Nginx, Node.js and PHP.
What is an IP address? Public vs private IP
A plain explanation of what an IP address is and how public and private IPs differ.
How to find your IP address (computer and phone)
How to check your public and private IP on Windows, Mac, iPhone and Android.
How to change your IP address
Ways to change your public IP, such as restarting the router, switching to mobile data or using a VPN, and what to watch out for.
How accurate is IP location?
How precise an IP based location is, and why it can show a different place.
IPv4 vs IPv6: the differences
How IPv4 and IPv6 differ, and how to tell which one your IP is.