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The red area is the District of Columbia, served by area codes 202 and 771. Area codes 202 and 771 are telephone area codes in the North American Numbering Plan (NANP) for Washington, D.C. Area code 202 was one of the original North American area codes established in October 1947 by AT&T.
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]
The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667 ... including its suburbs of Washington, D.C. ... Code of Conduct ...
List of Washington area codes may refer to: List of Washington (state) area codes ... Code of Conduct; Developers; Statistics; Cookie statement; Mobile view ...
Pages in category "Area codes in Washington, D.C." This category contains only the following page. This list may not reflect recent changes. ... Code of Conduct;
Now, many scam phone numbers have different area codes, including 809, which originates in the Caribbean. Another area code to look out for may look like it’s coming from the United States, but ...
The red-colored area is the northern region of the Commonwealth of Virginia served by area code 703 and its overlay code 571.. Area codes 703 and 571 are telephone area codes in the North American Numbering Plan (NANP) for Northern Virginia, including the independent cities of Alexandria, Fairfax, Falls Church, Manassas, and Manassas Park, as well as all of Arlington and Fairfax counties and ...
Most of the Washington region's inner ring is a single local calling area, even though it is split between three area codes–the District's area code 202, Maryland's area code 301 and Northern Virginia's area code 703. For most of the second half of the 20th century, it was possible to dial any number in the metro area with just seven digits.