GRC Data Intelligence

North American Numbering Plan Administration (in English) - The NANP is the numbering plan for the Public Switched Telephone Network in the United States and its territories, Canada, Bermuda, and many Caribbean nations, including Anguilla, Antigua & Barbuda, Bahamas, Barbados, British Virgin Islands, Cayman Islands, Dominica, Dominican Republic, Grenada, Jamaica, Montserrat, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Trinidad and Tobago, and Turks & Caicos. Includes area code maps, code lists etc.  

Links to Telephone number search engines - a pages of links to white and yellow pages as provided by national telephone companies. Also some information about telephone number structures, area codes etc. 

Links to telephone directories on the web (in English/German/Spanish/French/Italian) - teldir.com. 

Links to telephone directories and search engines on the web (in Dutch) - 2link.be. 

International - (in English) - list of country telephone codes and the area codes for the main cities in each country.  

International - (in English) - list of country telephone codes in numerical order.  

International dialling codes - (in English) - list of country telephone dialling codes, the number to dial international from a country, and selected area codes for each country. 

World Telephone Numbering Guide - (in English) - full information, country codes, lengths of telephone numbers and area codes, and so on.  A complete resource. 

International dialling codes and area codes - (in English) - enter number to show place in which the number is (USA or Canada) or the country (rest of the World). 

International dialling codes and area codes - (in English) - locate area codes, city name or country telephone codes.  

International dialling codes and area codes - (in English) - list.  Choose "USA", "Canada" or "International"  from the menu.

International (in Spanish) - Yellow pages/business listings for Spanish-  and Portuguese-speaking countries. 

North America - area codes database (in English, based in Altoona, FL, USA - commercial site) - Quentin Sager Consulting.  Includes all countries in the North American Numbering Plan Administration area, and Mexico.   

North America - area codes (in English) - List of area codes and related time zone.   

Europe  - Europages - European business directory. 

Australia - (in English, Italian, German and Indonesian) - White pages

Australia - (in English) - links to Australian telephone number, postcodes and post office pages

Australia - (in English) - Australian business directory search (phonewords.com.au)

Austria - (in German) - Telephone number lookup from the Post & Telekom Austria.

Austria - (in German or English) - Yellow Pages.

Belize (in English) - search for a telephone number by name or number. 

Canada - (in English) - Canada411 -  locate a person's number and address by entering name. 

Canada - (in English) - list of area codes for Canada. Choose "Canada" from the menu.

Canada - (in English) - map of telephone area codes in Canada (choose province). 

Canada - (in English) - Canadian trade index.

China - (in English) - postal codes and telephone area codes list.

Greece (in Greek) - Greek yellow pages. 

Hungary (in English or Hungarian) - Hungarian telephone number search engine. 

Iceland (in Icelandic) - Iceland Telecom telephone number search engine.

Japan (in English) - yellow pages 

Japan (in English or Japanese) - another yellow pages. 

Macedonia  (in English and Macedonian) - search engine for telephone numbers (white pages) 

Mauritius  (in English) - Yellow pages/business listings. 

Mauritius  (in English) - Yellow pages/business listings. 

Mauritius  (in English) - Bouzer Mauritius

Mexico (in Spanish) - Yellow pages/business listings.

Netherlands  (in Dutch) - search engine for telephone numbers.

United Kingdom- (in English) -  British Telecom telephone number search engine (white pages) 

United Kingdom (in English) - BT directory enquiries.

United States - (in English) - telephone area code map (choose the state required). 

United States - (in English) - area code search engine - search by area code or city name (commercial). 

United States - (in English) - list of area codes for United States. Choose "USA" from menu.

United States - (in English), from MelissaData - list city names and location information from an area code or telephone number. 

United States - (in English), from MelissaData - list various city names and location information from parts of a telephone number. 

United States - (in English), from MelissaData - list area codes within a radius in miles from another area code. 

United States - (in English), from WhitePages.com - search for a telephone number by person name or search for a person name by telephone number. 

United States - (in English), from MacRae's Bluebook - industrial directory.

United States - (in English), YellowBook - business search directory.

United States - (in English), Anywho - yellow pages, white pages and reverse lookup.

United States - (in English), Reverse Phone Check - reverse lookup.

United States - (in English), Addresses.com - yellow pages, white pages and reverse lookup.