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American Samoa (the former country code for this possession and unorganized territory of the United States) October 2, 2004: 2004: inclusion in NANP; 685: not in use; available for geographic assignment 686: Virginia (the Richmond Metropolitan Area, including Petersburg and the Northern Neck and Middle Peninsula) February 1, 2024: overlaid on ...
Telephone and Data Systems, (through its subsidiary TDS) serves mainly rural areas in parts of 36 states. [ 3 ] Altafiber , formerly known as Cincinnati Bell, which serves the Cincinnati metropolitan area , and Hawaii (due to its ownership of Hawaiian Telcom ). [ 4 ]
The largest telephone numbering plan in North American is the North American Numbering Plan (NANP), serving 25 regions or countries. Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union. Original North American area codes
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, or 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.
Telephone dial number card of c.1948 with the local telephone number 4-5876 in Atlantic City, NJ, using the central office prefix 4, later converted to AT4 Face of a 1939 rotary telephone dial with the telephone number LA-2697, which includes the first two letters of Lakewood, New Jersey, as the central office prefix, later converted to LA6.
A closed numbering plan, as found in North America, features fixed-length area codes and local numbers, while an open numbering plan has a variance in the length of the area code, local number, or both of a telephone number assigned to a subscriber line. The latter type developed predominantly in Europe.
Each three-digit area code has a capacity of 7,919,900 telephone numbers (7,918,900 in the United States). Despite widespread use as fictional telephone numbers in the form NXX 555-XXXX , only line numbers 0100 through 0199 are reserved for this purpose, while 1212 and 4334 are the only assigned uses for directory assistance and other functions.
The following information applied to residential local telephone service in the Detroit, Michigan area during the 1970s and 1980s. Much about this subject has changed dramatically since that time, and continues to do so. A local exchange carrier is a carrier of telephone calls and other communication services carried by telephone lines.