Extremely simple IP to Lat/Long API demo. Use at your own risk.

Geoffrey Grosenbach http://peepcode.com

• Build ext/GeoIP-1.4.6 (./configure && make && sudo make install)
• Download binary GeoLiteCity.dat database from http://www.maxmind.com/app/geolitecity
• Put GeoLiteCity.dat in "./data"
• Isolate will install other dependencies when you launch the app.

rackup -p 3000 config.ru

View JSON data for an IP address with:

http://localhost:3000/geoip/api/locate.json?ip=24.18.211.123

{
    latitude: 47.684700012207
    country_name: "United States"
    area_code: 206
    city: "Seattle"
    region: "WA"
    longitude: -122.384803771973
    postal_code: "98117"
    country_code3: "USA"
    country_code: "US"
    dma_code: 819
}

This product includes GeoLite data created by MaxMind, available from http://www.maxmind.com/.