Understand your connection

IP address guides.

Start with the question behind your result. These guides explain what an IP check can tell you and give you practical steps for the checks it cannot do alone.

Sharing an IP with tech support?

Choose the right address for a website, router, printer or another device on your network.

Public vs. private IP

Seeing a different IP on another site?

Learn why two websites can see different IP versions and how to compare like with like.

IPv4 vs. IPv6 explained

Checking your VPN connection?

Compare your public address before and after connecting, and understand which checks need a dedicated leak test.

Check your VPN's IP

Location showing another city?

Understand network routing, VPN exit points and database differences, and find out where to report a wrong location.

Why IP location can be wrong

Public IP keeps changing?

Separate normal address changes from connection problems, including dynamic IPv4 and temporary IPv6 addresses.

Why your public IP changes

Router and IP checker disagree?

Compare your router's WAN address with the same IP version online, and understand double NAT and carrier-grade NAT.

Router WAN IP, NAT and CGNAT

Choose a tool

My public IP shows the address used to reach this website.
IP address lookup finds approximate location and network details for a public address.
Compare IP addresses records a starting result in this page and checks again after you switch networks or connect a VPN.