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Area code 509 is the telephone area code in the North American Numbering Plan (NANP) for the eastern part of the U.S. state of Washington. The numbering plan area (NPA) roughly comprises the state east of the Cascade Mountains , and includes Spokane , the Tri-Cities ( Richland , Pasco , and Kennewick ), Ellensburg , Yakima , Walla Walla , and ...
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.
509: Washington (all of eastern Washington, including Spokane, Ellensburg, Pullman, the Tri-Cities area, ... area code 387 is reserved as a fifth code for the region ...
Starting April 24, the 509 area code can be dialed even when making a local call. By October, local calls in Eastern Washington won't work unless the area code is dialed. Some phone customers in ...
Area code 541 was created in an area code split from area code 503 on November 5, 1995. ... Washington area codes: 206, 253, 360, 425, 509, 564
On July 1, 1999, area code 971 was created as a concentrated overlay for most of the numbering plan area, with the exceptions of Clatsop and Tillamook counties. [3] Initially, ten-digit dialing was to become mandatory in that service area on January 30, 2000, but the date was extended until October 1, 2000. [4]
Area codes 506 and 428 are the telephone area codes in the North American Numbering Plan (NANP) for the Canadian province of New Brunswick. Area code 506 was created in 1955 in a split of numbering plan area (NPA) 902. Area code 428 was added to the same numbering plan area in 2023 to form an overlay plan of the area.
Some mobile telephone numbers from the 1990s assigned to communities in the area surrounding 617 (which is now the 781 area code) kept the 617 area code after the split. Area code 508 was split from 617 on July 16, 1988. Area code 978 subsequently split from 508 on September 1, 1997. Area code 781 was split from 617 on September 1, 1997.