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Learn how telephone numbers are written and dialed in different countries and regions, according to the ITU recommendation E.123. Compare the formats, lengths, prefixes and codes of landline, mobile, toll free and service numbers.
Learn about the telephone number prefixes for reaching foreign countries or areas via international telecommunication networks. Find out the country code for Niger (227) and other countries in different world zones.
E.164 is an ITU-T standard that defines a general format for international telephone numbers with up to fifteen digits. It includes country codes, global services, networks, groups of countries, and trials categories, and provides guidance on printing and DNS mapping of E.164 numbers.
Find out how to get live expert help with your AOL needs, from email and passwords, technical questions, mobile email and more. You can also access 24/7 phone support if you are a paid member by calling 1-800-827-6364.
Find out the emergency numbers for police, ambulance, fire and other services in different countries and regions. Compare the global and local variations of 112, 911, 999 and other codes.
Learn how to dial international phone numbers from Australia and other countries using different prefixes. Find out the meaning of 0011, 000, 009 and other codes, and see the list of historic and current prefixes.
Find the mobile prefixes for different countries and territories, including Afghanistan, Åland, Algeria, American Samoa, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Aruba, Ascension Island, Australia, Austria, etc. The web page also shows the international calling codes, the size of NN (NSN), and the carriers for each prefix.
Learn about the format, access codes, and area codes of telephone numbers in the Philippines, including the 02 area code for Metro Manila and Rizal. Find out how to dial domestic and international calls and the history of the open dial plan.