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Interactive map of the numbering plan areas of the Commonwealth of Pennsylvania (blue). This is a list of telephone area codes of Pennsylvania. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each.
All boroughs were provided with the additional area code 917, arranged in an overlay plan. Introduced on February 4, 1992, [2] area code 917 was the first overlay area code in the North American Numbering Plan. When it was established, all cellphones in New York City were switched to 917, freeing up telephone numbers for additional landlines. [3]
2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...
An area code overlay is a numbering plan area ... 917: 212: New York City borough of Manhattan, ... Santa Barbara and San Luis Obispo Counties in California: 825: 403 ...
New York City: Manhattan only; overlays with 212, 646, and 917 347: 1999: New York City: all except Manhattan; overlays with 718, 917, and 929 363: 2023 Nassau County; overlay of 516 516: 1951 Nassau County; overlaid with 363 as of January 2023 518: 1947 Albany, Glens Falls, Plattsburgh, Saratoga Springs and northeastern New York; overlaid by ...
Only one case, the first overlay area code in the NANPA, 917, was an example of this. It was established originally as an area code specifically for cellphones and pagers in New York City, but soon afterward, the FCC specified that area codes must not be service-specific, but it grandfathered this use for 917. Later, 917 became available for ...
County FIPS code [4] County seat [5] Established [5] Origin Etymology [6] Population [7] Area [5] Map Adams County: 001: Gettysburg: 1800: Parts of York County: John Adams, second U.S. President: 106,748: 522 sq mi (1,352 km 2) Allegheny County: 003: Pittsburgh: 1788: Parts of Washington and Westmoreland Counties
Map of previous proposed split of 814 with 582, showing county lines. When numbering pool exhaustion became a threat in the 2000s, the Pennsylvania Public Utility Commission (PUC) approved a numbering plan split in December 2009, that would have assigned area code 582 to most of the northwestern portion of the territory, including Erie, by 2012. [2]