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Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Cellphone numbers are assigned the 1-digit area code 6, leaving eight digits for the subscriber's number: 06-CBBBBBBB, where subscriber's number ('C') is neither 6 nor 7. Service numbers (area codes 800, 900, 906 and 909) have either 4 or 7 remaining digits, making them 8 or 11 digits in total: 0AAA-BBBB or 0AAA-BBBBBBB. The area code 14 has no ...
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]
Zone 8 uses four two-digit codes (81, 82, 84, 86) and four sets of three-digit codes (80x, 85x, 87x, 88x) to serve East Asia, South Asia and special services. Zone 9 uses seven two-digit codes (90–95, 98) and three sets of three-digit codes (96x, 97x, 99x) to serve the Middle East, West Asia, Central Asia, parts of South Asia and Eastern Europe.
xx 6: 11: 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. [5] xx 7: xx 8: xx 9: British Indian Ocean Territory +246: 380 7 387 British Virgin ...
Area codes in Ohio (9 P) Area codes in Oklahoma (4 P) Area codes in Oregon (4 P) P. Area codes in Pennsylvania (11 P) R. Area codes in Rhode Island (1 P) S.
The value to give for State=, is the 2-letter abbreviation to include the area code template for this state or Canadian province, or is the full name of the Caribbean country that this area code is located within, e.g. State=NY, State=QC, State=Turks and Caicos Islands.
The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [ 1 ] In 1949, Oakland, CA, received the fifth regional dial switching center for Operator Toll Dialing in the nation, [ 2 ] which set the stage for ...