Number prefix databases
Below are the web sites that we find useful for national and international prefixing.
Numbering Plan (Districts, Zones, Precincts)
Telecommunications Industry Ombudsman
Below is a list of wholesale carriers, Click here to download (61kb) a table listing the products they sell.
Telecoms Buying Group (TBG)
Telco in a Box
Unitel (formerly RSLCom Partners)
Verizon Business (formerly MCI)
Wholesale Communications Group (WCG)
Wholesale Telecommunications Services (WTS)
If you have any suggestions for other resources to add to this page, please email us.