Well yes, it’s the latest server version — which still doesn’t mean, that the “IP2LOCATION” database on the server is also the latest as well. It’s getting updated automatically on every server update release, but sadly not in live-time.
There is a way on 3.13.1 to manually switch or update the geolocation database — you may need to search into the forums for further informations.
Here's a little suggestion for @TeamSpeak
Please remove IP2Location from the coming server versions & weblist updates. Replace it to MaxMind or something else.