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IPXplorer's answer
Simple to use UI and API
IPXplorer's answer
Great value for your money
IPXplorer's answer
Spring boot, Redis, Thymelyf
IPXplorer's answer
-UptimeSage -QuickBooks
ipinfo.io - Simple IP address information.
IP-Toolbox.com - IP-Toolbox.com is the best site for quick and easy viewing of your public IP address and other related information.
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
GRC Port Scan - GRC Internet Security Port Scanner. Tests for open ports on your external IP address.
ipapi - Web analytics with IP address lookup and location API
TrueIP - TrueIP is a small program that runs in the system tray, monitoring your IP address(es).