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Country calling codes, country dial-in codes, international subscriber dialing ( ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
United States: North 1 011 1 Several NANP areas; see Telephone numbers in the United States. United States Virgin Islands: Caribbean 1-340: 011 1 Uruguay: South 598: 00 No National Call Prefix needed since 29 August 2010 according to the new numbering plan. All geographical numbers have 8 digits. Venezuela: South 58: 00 0
Area codes 201 and 551 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. State of New Jersey. Area code 201 was the area code assigned to the entire state of New Jersey in 1947, when the North American area code system was formed.
This includes all area codes that can also be found in the subcategories. This category lists the telephone area codes in the United States . Area codes in the North American Numbering Plan area may not contain 0 or 1 as the first digit.
Area codes 678, 470, and 943 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. State of Georgia in the Atlanta metropolitan area.
Area code 505 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New Mexico. Its numbering plan area (NPA) comprises the northwestern and central portions of the state, including the Albuquerque metropolitan area, Gallup, Santa Fe, and Farmington.
Area codes 440 and 436 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Ohio, serving the parts of the Greater Cleveland area, surrounding the city of Cleveland, but not the city and most of its inner suburbs .
Area code 206 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Washington. The numbering plan area (NPA) includes Seattle and most of its innermost suburbs.
Area codes 602, 480, and 623 are telephone area codes in the North American Numbering Plan (NANP) for most of the Phoenix metropolitan area in the U.S. state of Arizona. Area code 602 is the oldest area code in Arizona and was assigned in 1947 for the entire state.