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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.
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 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.
The North American Numbering Plan (NANP) is a telephone numbering system for twenty-five regions in twenty countries, primarily in North America and the Caribbean. It uses a three-digit area code to identify each numbering plan area (NPA) and a seven-digit telephone number for each subscriber.
Learn about the history and current status of the three area codes for most of Manhattan in New York City. Find out how they are overlaid, how they are perceived, and how they are assigned to phone numbers.
Learn about the history and usage of telephone exchange names or central office names, which were assigned to switching systems in different localities. Find out how they were dialed, displayed, and replaced by numeric systems in various countries.
Find out the telephone prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks. The list is organized by world zones and includes the ITU-T standards and the exceptions for political and historical alignment.
Learn how to dial phone numbers in different countries and regions of the Americas, including North, Central, South and Caribbean America. Find out the prefixes, international access codes, trunk prefixes and comments for each country or territory.