122°19′59″W / 47.60972°N 122.33306°W / 47.60972; -122.33306 Area code 564 is a telephone overlay area code in the North American Numbering Plan (NANP) for Western...

area will be converted to an overlay complex with area code 564, which also overlays 360. Area code 206 was one of the original North American area codes...

492: NPA 564 to Overlay NPA 360 (Washington)" (PDF). NANPA. 2016-06-28. Retrieved 2025-04-26. Brown, Andrea (2021-03-23). "Meet area code 564: The new...

plan area has been part of an overlay complex with area code 564, which also overlays 206. From 1947 to 1957, all of Washington state was assigned area code...

complex overlay plan of area code 564, which has been active only in numbering plan area 360 since 2017, when central office code exhaustion demands relief...

geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits...

24, 2021 – via Newspapers.com. Brown, Andrea (March 23, 2021). "Meet area code 564: The new kid in town is gaining ground". The Everett Herald. Retrieved...

Area codes 617 and 857 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts, serving the city of Boston...

Area codes 905, 289, 365, and 742 are telephone area codes in the North American Numbering Plan (NANP) for the Golden Horseshoe region that surrounds Lake...

area code overlay complex is a telephone numbering plan that assigns multiple area codes to the same geographic numbering plan area (NPA). Area code overlays...

Area code 207 is the sole telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Maine. Area code 207 was created as one...

Area codes 503 and 971 are telephone area codes in the North American Numbering Plan (NANP) for the northwestern region of the U.S. state of Oregon. The...

Area codes 541 and 458 are telephone area codes in the North American Numbering Plan (NANP) for most of the U.S. state of Oregon, excluding only the northwestern...

Area code 604 is a telephone area code in the North American Numbering Plan for the southwestern corner of British Columbia, Canada. The numbering plan...

Area codes 705, 249, and 683 are telephone area codes in the North American Numbering Plan (NANP) for most of northeastern and central Ontario in Canada...

Area code 701 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. State of North Dakota. It is one of the 86 original North...

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...

Area codes 778, 236, 672, and 257 are telephone overlay area codes in the North American Numbering Plan (NANP) for the Canadian province of British Columbia...

Area codes 208 and 986 are telephone area codes in the North American Numbering Plan for all of Idaho. Area code 208 is one of the 86 original area codes...

Area code 218 is a telephone area code in the North American Numbering Plan (NANP) for the northern part of the U.S. state of Minnesota. It is assigned...

Area codes 519, 226, 548, and 382 are overlay telephone area codes in the North American Numbering Plan (NANP) for most of southwestern Ontario. Area...

Area code 606 is a telephone area code in the North American Numbering Plan for the eastern half of south-central and the eastern part of the Commonwealth...

Edward Island. Area code 902 was one of the nine original North American area codes in Canada established in October 1947. Area code 782 was added to...

Area code 613 is one of the 86 original North American area codes assigned in October 1947. Area code 343 was assigned to the numbering plan area in...

Area codes 304 and 681 are telephone area codes in the North American Numbering Plan (NANP) for the entirety of the U.S. state of West Virginia. The numbering...

Area code 302 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Delaware. It is Delaware's only area code, and...

Area codes 870 and 327 are telephone area codes in the North American Numbering Plan (NANP) for southern, eastern, and most of northern Arkansas. 870...

Area code 907 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Alaska, with the exception of the small southeastern...

Saskatchewan. Area code 306 is one of the original North American area codes assigned in 1947. Area codes 639 and 474 were added to the numbering plan area in creation...

Area code 406 is the telephone area code in the North American Numbering Plan for the entire U.S. state of Montana. It has been Montana's only area code...