Axios and Morning Brew are a good sources. Source: about 3 years ago

IPStack is a leading provider of IP geolocation API services, offering developers and businesses a comprehensive API for accessing accurate location data based on IP addresses. With a vast database of IP address information and advanced algorithms, IPStack empowers organizations to leverage geolocation data effectively in their applications and systems. - Source: dev.to / 5 days ago

Ipstack - Locate and identify Website Visitors by IP Address. - Source: dev.to / 4 months ago

Looking to enhance your website or application with location-based services? Look no further! ipstack's Geo Lookup API is the perfect solution for seamless and accurate geolocation data retrieval. With this Free Geo IP API, you can easily obtain vital information about your users or customers, such as their country, city, latitude, longitude, time zone, and more. ipstack's API is renowned for its reliability and... Source: 11 months ago

Not really their fault. I think they mostly use https://ipstack.com/ for IP Geolocation API - their support is not the best when it comes to updating IP info. Source: 12 months ago

I had to contact https://ipstack.com/ / http://co.apilayer.net/ 5 or 6 times until they corrected the database, and Azure Sign-in logs started showing the correct details. Source: over 1 year ago