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1954: split to create area code 912; 1992: split to create area code 706; 1995: split to create area code 770; 1998: overlaid by 678; 405: Oklahoma (Oklahoma City, Stillwater, Edmond, Norman, Shawnee, and most of central Oklahoma) 1947: created for all of Oklahoma; 1953: split to create 918; 1997: split to create 580; 2021: overlaid by 572; 406 ...
These were used at first only by switchboard operators to route trunk calls between numbering plan areas, but were the foundation for the North American Numbering Plan, The 2L-5N system for the local directory number became the North American standard Direct long-distance dialing by customers, using the three-digit area code and a seven-digit ...
1. International access. 011. List of dialing codes. The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably ...
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 ...
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. [1] Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of ...
AT&T. AT&T Inc. is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [4] It is the world's third-largest telecommunications company by revenue and the second-largest wireless carrier in the United States. [5] As of 2023, AT&T was ranked 13th on the Fortune 500 rankings of the ...
Area code 700 of the North American Numbering Plan is a service access code (SAC) implemented by interexchange carriers. It is reserved for carrier-specific number assignments to special services or destinations. It was introduced in 1983 for providing customized services in anticipation of the introduction of long-distance competition in the ...
Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.
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