  |
World Telephone Numbering Guide - http://www.wtng.info
Lists and links to current international dialing codes and area codes with formatting guides and provides information on recent and historical changes. |
  |
North American Numbering Plan Administration: Area Codes - http://www.nanpa.com/area_codes/index.html
Find North American codes by a map, number, or location. Includes information on future planned area codes and a free downloadable area code database. |
  |
http://www.lincmad.com/ - http://www.lincmad.com/
Information about North American area codes, featuring changes, historical data and area code map. Detailed information on overlays and splits. |
  |
US Area Code Locations - http://www.areacodelocations.info
Provides a list of towns and cities covered by each US area code including overlays and splits. |
  |
Local Calling Guide - http://www.localcallingguide.com/
A free resource mainly aimed at telecommunications companies. Users can browse tabular data on North American area codes, numbering schemes, and rate centers. The data is available as XML for computer programs to read. |
  |
exUSSR Phone Codes - http://phonecodes.narod.ru/
Includes all cities of Russia, Ukraine, Belorussia, Moldova, Lithuania, Latvia, Estonia, Kazakhstan, Georgia, Uzbekistan, Azerbaijan, Armenia, Kirgizia, and Tadjikistan. |
  |
UK Phone Information - http://www.ukphoneinfo.com/
Returns area information, map, BT charge information, and nearby exchange names for telephone numbers, access/short codes, or the name of a location. |
  |
Time Dial - http://www.TimeDial.net
Displays the current time, international dialing code, area codes and currency converter for almost anywhere. Includes instructions on country codes and international dialing code parts usage. |
  |
TP2Location - http://www.TP2Location.com
Resolve any telephone number to its geographical location. |
  |
Assist Book - http://www.assistbook.com
Lists international dialing codes, area codes, weather, world time and currency exchange rates. Also has a reverse phone number lookup tool. |