Washington State Issues new Area Code, 10-Digit Dialing Mandate
With the 360 area code nearing phone-number exhaustion, the Washington Utilities and Transportation Commission approved a plan to make available a new area code, 564, to the western part of the state starting in fall 2017, the commission said in…
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a news release Thursday. The WUTC also OK'd mandatory 10-digit dialing for western Washington area codes by fall 2017. It said the North American Numbering Plan Administrator projects the 360 area code will be out of numbers by early 2018.