HEATKEYS

JSON IP and GeoIP REST API allowing to get a visitor IP address and to query location information from any IP address.

IP Location, API, database and fraud detection tools

My IP Address Lookup and GeoTargeting - Community Geotarget IP Project - domain to IP lookup, what country, city IP addresses map to - IP Trace

IP address lookup, location, proxy detection, email tracing, IP hiding tips, blacklist check, speed test, and forums. Find, get, and show my IP address.

Free Geolocation API

Geolocation determines the country, region, city and ISP of your Internet visitors

Twilio lets you use standard web languages to build voice, VoIP and SMS applications via a web API. Build the next generation of communications with us.

IPLocationTools.com offers free online tools or widgets related to IP address geolocation. The Real-Time Visitor API tracks all visitors to your site by IP address. The JavaScript API provides geo IP information to programmers.

Development blog on topics raging from Javascript, jQuery, knockout.js to ASP.NET MVC, ASP.NET Web API and C#.

Built by developers for developers the IP 2 Location API is a simple XML API that returns Country, City, Lattitude, Longitude and Country Code when you pass the IP address (IP v4 or IP v6)