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Zone 1 uses an integrated numbering plan; four digits (1xxx) determine the area served in Canada, the United States and its territories, and much of the Caribbean. Zone 2 uses two 2-digit codes (20, 27) and eight sets of 3-digit codes (21x–26x, 28x, 29x), mostly to serve Africa , but also Aruba , Faroe Islands , Greenland and British Indian Ocean Territory .
An area code is part of a telephone number in the United States, Canada, and the Caribbean. It is the part of the telephone number after the county code. For example, in the number 1-562-555-5555, the 1 is the country code (for the United States), and 562 is the area code. An area code is typically assigned to a state, city or region. The area ...
Area Code 815 Prefixes. Prefix City County Carrier Type Assigned (815) 200: Chicago, IL Cook: Paetec Communications, Inc. - Landline: 20/06/2006 (815) 201: Chicago, IL Adams: Bandwidth.Com Clec, Llc - Il: Landline: 15/08/2012 (815) 202: Burr Ridge, IL Ad ...
Area code 815 serves the state of Illinois. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 815 is a General Purpose Code. 815 service area does overlap with 779 area codes. Dialing pattern for local calls within the same NPA (area code) is 1+10D.
On January 1, 1947, the first North American area codes were issued in regions where standard 7 digit dialing codes were scheduled to be exhaused the soonest. By adding a 3 digit prefix to a 7 digit local number, this allowed for hundreds of millons of new phone numbers to be issued. The North American Numbering Plan Administration (NANPA) is reponsible for further divisions or adjustments to ...
Area code 319 is a telephone area code in the North American Numbering Plan (NANP) for the southeastern and east-central parts of the U.S. state of Iowa . Major cities in the numbering plan area (NPA) include Burlington, Cedar Falls, Cedar Rapids, Oelwein, Fort Madison, Iowa City, Keokuk, Mount Pleasant, and Waterloo .
