![]() This is despite the fact that the WMEA was split between three numbering plan areas (NPAs): the District's 202, 301 in southern Maryland, and 703 in Northern Virginia. ![]() Since the creation of the North American Numbering Plan (NANP) in 1947, most of the inner ring of the Washington metropolitan area has been a single local calling area, the Washington Metropolitan Exchange Area (WMEA).
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