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The Philippines has an international dialing code of +63 and an open telephone numbering plan with eight or nine digits. Learn about the fixed-line and mobile area codes, the access codes, and the migration to eight-digit numbers.
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.
E.164 is an ITU-T standard that defines a general format for international telephone numbers with up to fifteen digits. Learn about the categories, components, and applications of E.164 numbers, and how they are used in the public switched telephone network and the Internet.
Learn about the history and usage of fictitious telephone numbers in movies, music and other media. Find out why 555-555-5555 is not a valid number in North America and what are some examples of famous phone numbers.
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.
The North American Numbering Plan (NANP) is a telephone numbering system for 25 regions in 20 countries, mostly in North America and the Caribbean. It uses the country code 1 and assigns three-digit area codes to each region.
Ten-digit dialing is a telephone dialing procedure in North America that includes the area code of a number when calling. Learn about the history, methods and exceptions of ten-digit dialing in the United States and Canada.
Learn about the types, structures and formats of telephone numbers in different regions and networks. The International Telecommunication Union (ITU) has established a comprehensive numbering plan, E.164, for uniform interoperability of the networks of its member states or regional administrations.