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The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667. The state of Maryland is ... area 227 240 301: western Maryland ...
Area code 301 was the first area code for all of Maryland, from 1947, when the area code system was created, until 1991, when everything from Baltimore eastward was split off as area code 410. In 1997, area code 240 was added as an overlay area code for the 301 territory. On June 14, 2023, a third overlay code, 227, was added to provide more ...
Code Territory or use Date Notes 300: not in use; available for non-geographic assignment easily recognizable code (ERC) 301: Maryland (Silver Spring; Washington, D.C., suburbs; all counties which touch the Potomac River; Waldorf, Hagerstown, Frederick, Rockville, Cumberland; and land line telephones in western Maryland)
In addition to being the sole area code in the Space Coast region around the Kennedy Space Center, this is the only partial overlay area code in North America 323: 213: Central Los Angeles, incl. Downtown L.A. and Hollywood: 326: 937: Southwest Ohio: 331: 630: Western suburbs of Chicago: 332, 646 , 917: 212
Pages in category "Area codes in Maryland" The following 3 pages are in this category, out of 3 total. ... Area codes 301, 240, and 227; Area codes 410, 443, and 667 ...
In 1951, the number of area codes grew to ninety: the State of New York gained area code 516 on Long Island, and Southern California received area code 714, to reduce the numbering plan area of Los Angeles. [23] Area code handbook issued by many telephone companies in 1962 to promote the newly introduced direct distance dialing.
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The three area codes are overlay codes for one numbering plan area, among which 410 was the initial area code for the NPA, when it was split from area code 301 in 1991. 443 and 667 found assignment primarily in cellular service and for competitive local exchange carriers, such as Comcast and Cavalier Telephone, when introduced, but have since ...