What is my IP? - Find out what your IP is. Do not hesitate to open wimip.
geoiplookup.net - (IPv4 only) Online tool to get accurate IP address information
TrueIP - TrueIP is a small program that runs in the system tray, monitoring your IP address(es).
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.
Skeebus - Skeebus is a macOS menu bar app that displays your current public IP address
IPv6 test - IPv6-test.