Web Directory

» Assist Book
   Lists international dialing codes, area codes, weather, world time and currency exchange rates. Also has a reverse phone number lookup tool.
   http://www.assistbook.com

» CountryCallingCodes.com
   Online tool that builds dialing codes based on locations selected. Includes many international dialing codes and some area codes. Also has a reverse phone number lookup tool and current time.
   http://www.countrycallingcodes.com

» CountryCodes.com
   Online tool that build dialing codes based on locations selected. Lists many international dialing codes and some area codes.
   http://www.countrycodes.com

» Dial Code
   Find international dialing codes and area codes by typing location in search input box. Information on direct dial prefixes.
   http://www.dial-code.com

» Dial Codes Plus
   Listing of international dialing codes and area codes with instructions.
   http://dialcodesplus.com/

» Fone Finder
   Enter the 3-digit prefix or the city name to find an area code.
   http://www.fonefinder.net

» HowtoCallAbroad.com
   Calling guide for United States and Canadian residents listing international country and city codes, phone books and time zones.
   http://www.howtocallabroad.com/

» International Dialing Codes
   International and national direct dialing prefixes and instructions.
   http://kropla.com/dialcode.htm

» LincMad
   Information about North American area codes, featuring changes, historical data and area code map. Detailed information on overlays and splits.
   http://www.lincmad.com/

» Local Calling Guide
   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.
   http://www.localcallingguide.com/

» NPA NXX Source
   Databases for sale providing data on area codes and telephone exchange prefixes in the North American Numbering Plan.
   http://www.npanxxsource.com

» North American Numbering Plan Administration: Area Codes
   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.nanpa.com/area_codes/index.html

» TP2Location
   Resolve any telephone number to its geographical location.
   http://www.TP2Location.com

» Time Dial
   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.
   http://www.TimeDial.net

» Time and Date
   International dialing codes for almost any country and area codes for many cities. The interface includes a dropdown selector and local times are provided with dialing codes.
   http://www.timeanddate.com/worldclock/dialing.html

» UK Phone Information
   Returns area information, map, BT charge information, and nearby exchange names for telephone numbers, access/short codes, or the name of a location.
   http://www.ukphoneinfo.com/

» US Area Code Answers
   Information about US-based area codes and prefixes. Find the city, carrier, location, and more information about any phone number with this free service.
   http://www.areacodeanswers.com

» US Area Code Facts
   Information on area codes of the united states.
   http://areacodefacts.com/

» US Area Code Finder
   Area code lookup for the United States with maps. Search by state or by code.
   http://www.areacodesearchengine.com

» US Area Code Locations
   Provides a list of towns and cities covered by each US area code including overlays and splits.
   http://www.areacodelocations.info

» US Switchboard - Area Code
   Find United States area code by city and state, Find City and State by area code.
   http://www.infospace.com/swbd.main/white-pages/reverse-lookup

» Verizon - US Area Code Lookup
   Find the major locations in a certain area code by entering the area code, or find the area codes that are used in a certain state by entering the state name.
   http://www22.verizon.com/areacodes/

» World Search Dial Codes
   Contains world telephone codes and time zone information. Search by city, country or number.
   http://iptop.net/eng/code.html

» World Telephone Numbering Guide
   Lists and links to current international dialing codes and area codes with formatting guides and provides information on recent and historical changes.
   http://www.wtng.info/

» exUSSR Phone Codes
   Includes all cities of Russia, Ukraine, Belorussia, Moldova, Lithuania, Latvia, Estonia, Kazakhstan, Georgia, Uzbekistan, Azerbaijan, Armenia, Kirgizia, and Tadjikistan.
   http://phonecodes.narod.ru/