ipstack at https://api.ipstack.com geolocates IP addresses: country, region, city, coordinates, time zone. Errors come back as HTTP 200 with success: false.
Sign up at ipstack.com for an access key, passed as access_key in the query string. In the examples it's written {{IPSTACK_ACCESS_KEY}}. The free plan has a monthly call limit.
Full reference: https://ipstack.com/documentation
curl "https://api.ipstack.com/134.201.250.155?access_key={{IPSTACK_ACCESS_KEY}}"
Comma-separated; paid plans only.
curl "https://api.ipstack.com/134.201.250.155,72.229.28.185?access_key={{IPSTACK_ACCESS_KEY}}"