Crowded space. Quick google search of any of these keywords "ip address location api" , "ip lookup API" , "geolocation API by IP" etc. shows :
- https://db-ip.com/api - https://ipapi.co - https://freegeoip.net - ipinfodb.com - https://www.iplocation.net - http://neutrinoapi.com - http://www.ip2location.com - https://www.telize.com
and a few dozen more. I wonder if collectively they are serving over a few billion requests per day. Microservices & API culture FTW !