My 'What is my IP Address' Tool is Displaying Incorrect Geolocation for IP Address Lookup

Just launched an update for our "What is my IP Address" tool, and it seems to have developed a mischievous personality. The tool is now consistently showing wildly inaccurate geolocation data for our IP address lookup feature, often placing users in entirely different continents.

Here's a peek at what the console is sometimes spitting out:

[WARN] GeolocationService: Inaccurate result detected for IP 192.168.1.1.
[DEBUG] Expected: Lat: 34.0522, Lon: -118.2437 (Los Angeles)
[DEBUG] Actual: Lat: 51.5074, Lon: 0.1278 (London) - <i>Oops!</i>
[ERROR] IP_LOOKUP_ENGINE: Geolocation mismatch threshold exceeded.

Any ideas why our IP address lookup is suddenly so confused and how to get it back on track? Thanks in advance!