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The Government of Canada's Translation Bureau recommends using hyphens between groups; e.g. 250-555-0199. [2] Using the format specified by the International Telecommunication Union (ITU) in Recommendation E.164 for telephone numbers, a Canadian number is written as +1NPANXXXXXX, with no spaces, hyphens, or other characters; e.g. +12505550199.
411 is a telephone number for local directory assistance in Canada and the United States. Until the early 1980s, 411 – and the related 113 number – were free to call in most jurisdictions. In the United States, the service is commonly known as "information", [ 1 ] although its official name is "directory assistance".
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
A telephone directory, commonly called a telephone book, telephone address book, phonebook, or the white and yellow pages, is a listing of telephone subscribers in a geographical area or subscribers to services provided by the organization that publishes the directory. Its purpose is to allow the telephone number of a subscriber identified by ...
411 LDA: Local Directory Assistance. 411 is dialed, and the operator is requested to search for a listing in a group of area codes local to the caller . Example: the caller lives in area code 630 (Oak Brook, Illinois) and requests a listing for a business in area code 312 (Chicago, Illinois). In this case, AT&T Illinois bills the call.
For example, 234 235-5678 is a valid telephone number; with area code 234, central office prefix (exchange) 235, and line number 5678. The number 234 911-5678 is invalid, because the central office code must not be in the form N11.
Historically known for distributing yellow pages phone books across Canada, into the 21st century YPG has primarily shifted to digital marketing services, though they also operate the YellowPages.ca local business search engine and Canada411 online phone directory, [1] [2] and still print phone books on a limited basis to some customers as of 2024.
The incumbent local exchange carrier in the numbering plan area is Bell Canada. Almost all Toronto Bell Canada landlines have area code 416, with 647-numbers allocated disproportionately to a growing mobile telephone market and to competitive local exchange carriers, such as cable and voice-over-IP services. Telephone numbers are portable, with ...