ipinfo.io - Simple IP address information.
ipdata.co - Get the Geolocation, Organisation, Currency, Timezone, Calling Code, Flag, Proxy, Tor and Threat intelligence data from any IPv4 or IPv6 address.
IP Location - IPLocation.io provides a free lookup tool to check the location of your Public IP Address. It finds this data through various GEO IP databases and online services. Just enter an IP and check its location easily.
ifconfig.co - What is my IP address? — The best tool to find your own IP address, and information about it.
BigDataCloud IP Geolocation API - Next Generation IP GeolocationAPI
IPTools - The "IP Tools" is powerful and handy application for network analyzing.