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Learn about the history, format and categories of telephone numbers in Singapore, regulated by the Info-communications Media Development Authority. Find out how to call Singapore and other countries from Singapore with different access codes.
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.
A list of country calling codes for various states and territories in Asia, with international call prefixes and dialing plans. The prefixes in Asia start with one of 2,3,6,7,8,9.
How to find out the birthday of a girl named Cheryl using clues given to her friends Albert and Bernard? This is a knowledge puzzle that went viral in 2015 and has a unique solution.
A telephone number is a sequence of digits assigned to a device or subscriber for communication via the public switched telephone network or other networks. Learn about the history, formats, and functions of telephone numbers around the world.
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.
Directory assistance or 411 is a phone service to find out a specific telephone number and/or address of a residence, business, or government entity. Learn how to use 411 in different areas, billing methods, data sources, and alternative services in the U.S. and Canada.