why is my 'What is My Country?' tool showing incorrect geolocation for certain users, please help?

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Lucas Wilson Author
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1 week ago Asked
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2 Replies
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hey everyone, i just launched my first real web tool, 'What is My Country? - Find Your Current Country & IP Location', and i'm super excited but also a bit stumped. it's my first big project and i'm kinda new to all this.

the tool is supposed to tell users their current country and IP location, and for most people, it works great! but i'm noticing a pretty big problem for some users. especially folks on mobile or certain ISPs, they're getting wildly inaccurate country results. like, someone in toronto, canada, is seeing 'united states' or even 'mexico' sometimes. it's not just a city mismatch, it's the whole country, which kinda defeats the purpose of the tool, you know?

i thought it might be the free IP API i started with, so i quickly upgraded to a paid service, like ip-api.com, hoping for better accuracy. that helped for some, but the core issue for those specific users remains. i've also poked around my server for obvious DNS or caching issues, but nothing clear is popping up. i even tried testing with VPNs, and oddly, when i use a VPN, the tool gets the correct country for the VPN's exit node, which makes me think it's not a fundamental IP database problem with the paid service itself, but maybe how my tool is interacting with it, or specific ISP handling.

what's weird is that for these problematic IPs, the API response will clearly say 'US' or 'MX', but the user is absolutely, 100% in canada or europe. it's not a subtle difference.

{
  "query": "192.0.2.1",
  "status": "success",
  "country": "United States",
  "countryCode": "US",
  "region": "CA",
  "regionName": "California",
  "city": "Los Angeles",
  "zip": "90001",
  "lat": 34.0522,
  "lon": -118.2437,
  "timezone": "America/Los_Angeles",
  "isp": "Some Mobile ISP Inc.",
  "org": "Mobile Network",
  "as": "AS12345 Mobile AS"
}

...but the user is actually sitting in Vancouver, Canada. this kind of incorrect geolocation data is what i'm seeing.

so, i'm really scratching my head here. are there common pitfalls for geolocation accuracy or reliable IP address lookup i'm completely missing, especially when building web tools like this? could it be something server-side i'm not configuring right that's messing with the requests? and honestly, any recommendations for more robust IP lookup services or methods for achieving better accuracy would be a lifesaver.

thanks in advance for any insights you guys can offer!

2 Answers

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Aisha Khan
Answered 6 days ago
Hey Lucas Wilson, your IP address lookup tool showing incorrect geolocation data for mobile and specific ISP users is a common challenge due to how IP blocks are managed and traffic is routed:
  • Mobile carriers frequently route traffic through centralized egress points, meaning the IP's registered location can be far from the user's actual physical location, impacting geolocation data accuracy.
  • Even with a paid IP API, the data primarily reflects the *registered* location of the IP block; for problematic IPs, check their WHOIS data to confirm the carrier's primary registration point.
  • For enhanced geolocation data accuracy, especially with tricky mobile and proxy IPs, consider more robust enterprise-grade services like MaxMind GeoIP2, Neustar, or Digital Element, which maintain highly granular and frequently updated databases.
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Lucas Wilson
Answered 6 days ago

That makes so much sense about the centralized egress points, Aisha. But I've been checking out MaxMind and others, and the cost for enterprise solutions feels a bit high for a small, free tool like this, especially since my current API gets VPNs right. Wondering if there's a middle ground for accuracy before jumping to full enterprise?

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