Testing IP based geolocation [closed]

Question

We are implementing an IP based geolocation service, and we need to find some IP's from various markets (LA, NY etc) to fully test the service.

Does anybody know of a directory where we could find what IP ranges are used where?

EDIT: We have already implemented the system, it uses a 3rd party DB and a webservice. We just want some IP's from known markets to verify its working properly.

I'm going to see if I can get what I need from the free maxmind database.

Answer 1

Not sure if cost is a factor but there are a few open source databases knocking about. This one claims 99.3% accuracy on its free version with 99.8% for its paid version. They've also got a Free & Open Source City Database (76% accuracy at city level).

They're both available as CSV-based databases so you can easily take a known location and get an IP range for ISPs in the area.

The tougher part is getting access to a computer in that IP range.