IPInfo would be a solid choice, but MaxMind is also reliable in most cases. However, some IP databases often provide inaccurate results, and I would recommend avoiding IPStack.

ARIN WHOIS is updated by the IP owner or user and can often be outdated or inaccurate, as many operators do not update it frequently.

On Mon, Feb 3, 2025 at 12:19 PM Scott Q. <qmail@top-consulting.net> wrote:

What are you guys using as a reliable GeoIP database ? I've tried Maxmind and a few others, also checking against ARIN but there's tons of differences.

For example: 1.2.9.0/24 . ARIN says it belongs to China Telecom but others say it's part of Russia: https://ipregistry.co/1.2.9.0

How to handle such cases ?

Thanks!
Scott