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The southern portion, including Tacoma, received area code 253, while the northern portion, including Everett and the Eastside, was assigned area code 425. [3] [4] On June 15, 2023, the WUTC approved the expansion of the overlay plan of area code 564 to the 206 area before central office code exhaustion occurs in 2025. [5]
206: Washington (Seattle area) 1947: ... 339: Massachusetts (Canton, ... area code 387 is reserved as a fifth code for the region; 648:
Area code Additional overlay codes Parent of area code splits Location 215 † ‡ 267, 445: Philadelphia and its immediately surrounding areas in the southeast corner of Pennsylvania 223: 717 ‡ 267: 215 ‡, 445: 272: 570 ‡ 412 † ‡ 878: Pittsburgh and its immediately surrounding areas in Allegheny County: 445: 215 ‡, 267: 484: 610 ...
Area code 781 and 339 are telephone area codes in the North American Numbering Plan for the U.S. state of Massachusetts. The numbering plan area consists of Boston’s inner suburbs, known as the Route 128 corridor, and some outer suburbs, especially in the South Shore region. It was created as in an area code split of area code 617 on ...
The U.S. state of Washington has six telephone area codes. The state initially used a single area code until it was divided in 1957 with the creation of area code 509 to serve Eastern Washington. In 1995, 206 was split again to serve just the Puget Sound region after area code 360 was created for the remainder of Western Washington.
Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [1] organized as four overlay complexes and a single-area code NPA. Eastern Massachusetts has area codes 339, 351, 508, 617, 774, 781, 857, and 978. [2] Western Massachusetts has area code 413 ...
An area code overlay is a numbering plan area ... 339: 781: Suburban Boston, ... but will expand to overlay 206, 253, and 425 as those area codes run out of numbers ...
Area code 603 is the sole area code for the U.S. state of New Hampshire in the North ... 206 Manchester: Hillsborough: October 13, 1999 ... 339 Derry: Rockingham ...