IP-Toolbox.com - IP-Toolbox.com is the best site for quick and easy viewing of your public IP address and other related information.
Whoisology - Connected database of whois records and whois history
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.
Bulk Whois API - Bulk Whois API is a provider of parsed WHOIS data in JSON with simple API, competitive pricing, top notch support, and more.
GRC Port Scan - GRC Internet Security Port Scanner. Tests for open ports on your external IP address.
WhoisAPI - WhoisAPI is the premier provider of freshly parsed whois data for domain names and IP addresses...