IP address lookup accuracy?

Hey everyone,

I just launched my first web tool, 'What is My ISP?', which aims to help users find their internet service provider based on their IP address. It's an exciting step for me, but I'm encountering a puzzling issue with the IP address lookup results and I'm quite new to this space.

The problem is that for some users, instead of showing their actual ISP (like Comcast or AT&T), the tool sometimes returns generic network providers or cloud services. For example, a user on a residential connection might see "Amazon Technologies Inc." or "Cloudflare" as their ISP, which isn't correct. This is making the tool less useful than intended for those specific cases.

// Example console output for a problematic IP
{
  "ip": "192.0.2.1",
  "country": "US",
  "city": "Ashburn",
  "isp": "Amazon Technologies Inc.",
  "organization": "Amazon.com, Inc."
}
// Expected: "Comcast Cable Communications, LLC" or similar

I'm trying to understand why this happens. Is it common for IP address lookup services to return these types of generic organizations for residential IPs? Are there specific databases or methods I should be using to get more accurate ISP identification for home users?

Anyone faced this before or have tips for a newbie?