ColoSource.com Colocation directory around the world. http://www.colosource.com/ix.asp

Colocation Explained Overview about the term colocation. http://www.webhostingchoice.com/colocation.php

Co-location versus Dedicated Web Hosting Discusses the pros and cons of choosing either co-location hosting or dedicated web hosting. http://www.webmasterstop.com/tutorials/choosing-colocation-dedicated.shtml

Co-Location.com Worldwide colocation facilities of Level(3). http://www.co-location.com/

Colocation.com Colocation.com is the world leader in colocation with over 73 facilities in 66 markets worldwide and over 4.3 million square feet of space. http://www.colocation.com/

RF Watch Supplier of RF Monitoring product that monitors GSM emissions and offers web based reporting. http://www.rfwatch.com