What services exist that geo-locates a person based on IP? [closed]

Answer 1

There is a community-based Geotargeting service from hostip.info. They have a nice clean API for Geotargeted IP Address Lookup. They've got over 8.6 million entries in their database.

Example:

http://api.hostip.info/get_html.php?ip=12.215.42.19&position=true
  Country: UNITED STATES (US)
  City: Sugar Grove, IL
  Latitude: 41.7696
  Longitude: -88.4588

if you add just call:

http://api.hostip.info/?ip=12.215.42.19

You'll get an XML document back.

Source: Scott Hanselman - The Weekly Source Code 37 - Geolocation/Geotargeting (Reverse IP Address Lookup) in ASP.NET MVC made easy