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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 ...
In 1997, 440 and 740 were added in additional area code splits. In 2000, 234, and in 2002, 567 were added as overlays. In 2015, area code 740 was overlaid with 220, relieving its rapid depletion. In 2016, area code 614 was overlaid with 380 in the Columbus/Central Ohio area for the same reason. In 2020, 326 was added as an all services overlay ...
The 400–499 range of area codes in Mexico is reserved for the states of Aguascalientes, Guanajuato, Hidalgo, Jalisco, Estado de México, Michoacán, Nuevo León, Querétaro, San Luis Potosí, Tamaulipas, Veracruz, and Zacatecas. The country code of Mexico is +52. [1] For other areas, see Area codes in Mexico by code.
The second area code, 202, was assigned to the District of Columbia. The allocation of area codes was readjusted as early as 1948 to account for inadequacies in some metropolitan areas. For example, the Indiana numbering plan area 317 was divided to provide a larger numbering pool in the Indiana suburbs of Chicago (area code 219). [citation needed]
Area code 207 is the sole telephone area code in the ... Central office prefixes in area code 207 [4] Prefix Location County Introduced ... 400 Portland: Cumberland:
Area code 603 in a 1956 map, covering the whole state. Area code 603 is the sole area code for the U.S. state of New Hampshire in the ... 400 Hollis: Hillsborough ...
Area codes 541 and 458 are telephone area codes in the ... Central office prefixes in area code 541 [5] Prefix Location County Introduced ... 400 Culver: Jefferson:
Area code 440 was established on August 16, 1997, in a three-way split of area code 216, one of the original North American area codes, [1] to provide relief from central office prefix exhaustion from increasing popularity of cellular phones and population pressure. [2]