struggling with accurate geo-targeting for web tool, any tips?

hey everyone, we've got this web tool, 'What is my City Name', which is pretty straightforward – it tells users their current city based on their IP. we’re trying to really dial in the precision for geo-targeting, specifically at the city or even postal code level, but it’s proving to be a real head-scratcher.

the biggest hurdle is the technical challenge of achieving consistent geo-location accuracy. we're constantly battling with VPN usage, which obviously throws things off, and then there are mobile carrier IPs that often resolve to a regional hub miles away from the actual user. isp inconsistencies just add another layer of complexity, making it tough to get that granular city-level data. we're using MaxMind GeoLite2 currently, which is fine for country or state, but it just doesn't cut it for the high precision we're aiming for. i'm really looking for advanced strategies or maybe alternative, more robust data sources beyond standard GeoLite2. has anyone had success with other commercial databases or hybrid approaches to significantly improve geo-targeting and geo-location accuracy? any tricks for mitigating the VPN/mobile IP issues? thanks in advance!