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Area code 780 is also the last new area code in Canada to be introduced by a split. Within a decade, area code 780 was close to exhaustion once again, along with area 403 in the south. The solution for mitigation was to implement a complex overlay for the entire province, extending over both numbering plan areas, with the new area code 587.
Area code 808 is a telephone area code in the North American Numbering Plan (NANP) for the Hawaiian Islands, comprising the windward and the leeward islands. The area code also serves Wake Island in the western Pacific Ocean. The code was assigned on August 8, 1957, [citation needed] about two years before the statehood of Hawaii.
Area codes 813 and 656 are area codes in the North American Numbering Plan for the U.S. state of Florida in the city of Tampa, Florida, and its surrounding areas, such as Zephyrhills and Oldsmar. In 2022, due to exhaustion of central office prefixes, area code 656 was added to the service area forming an overlay complex .
Area codes 587, 825, and 368 are telephone area codes in the North American Numbering Plan (NANP) for the entire Canadian province of Alberta. They form an overlay with area code 403 of southern Alberta, and northern Alberta's 780 .
Area code 619 is shown in red. Area codes 619 and 858 are telephone area codes in the North American Numbering Plan (NANP) for most of San Diego County in the U.S. state of California. Area code 619 was created by a split of area code 714 in 1982. In 1999, a part of the 619 numbering plan area was
Numbering plan areas in California (blue) and border states. Area codes 415 and 628 are shown in red. Area codes 415 and 628 are telephone area codes in the North American Numbering Plan (NANP) for the city of San Francisco and its northern suburbs in Marin County (across the Golden Gate), and the northeast corner of San Mateo County in the U.S. state of California.
Area code 807 is a telephone area code in the North American Numbering Plan (NANP) for the Canadian province of Ontario. The numbering plan area (NPA), comprising only Northwestern Ontario , was created in early 1962 in an area code split of NPA 705 .
Area code 600 has a capacity of 798 central office prefixes (200 to 999, with 555 and 911 not issued). Six relief area codes (622, 633, 644, 655, 677 and 688) are reserved by NANPA as subject to assignment in Canada for expansion of non-geographic services [5] but have never been used. Area code 666 is not assigned.