IP Guide - Look up IP addresses, networks, and ASNs
IPv6 test - IPv6-test.
whatismyip.cc - External IP Address lookup tool with option to scan the external IP address.
What is My IP Address - Open Source Website To Get Your IPs Address By WebRTC
What is My IP Live - Find your IPv4 and IPv6 just by visiting whatismyip.live - complete IP geolocation is also provided along with some other useful IP tools.
ShowIP - ShowIP displays the IP address(es) of the current page in the status bar.