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This is a list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters .
Existing customers will keep the 559 area code and specific telephone numbers. New customers will receive the 357 demarcation. The overlay does mean that phone users will have to dial a 1 + area ...
As a result, area code 559 was created in an area code split of the 209 numbering plan area on November 14, 1998. [2] The new area code was assigned to the southern part of 209. A permissive dialing period was maintained until May 15, 1999. Although this provided general relief, the California-Nevada Code Administration (CNCA) indicated that ...
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 ...
Area code 209 was created in an area code split of area code 415 on October 26, 1957. On November 14, 1998, the southern half of this numbering plan area received the assignment of area code 559 . On October 24, 2021, 209 was transitioned to 1+10-digit dialing despite not being part of an overlay complex at that time.
A new area code is coming to the Upstate. By next summer, 821 will be added as a prefix to the current 864 area code. The South Carolina Public Service Commission on Nov. 28 announced the new area ...
When that capacity is reached, a new area code must be created. Assigning a new area code is possible by two principal methods. A numbering plan area may be geographically divided, a process called area code split, or an additional area code may be assigned to an existing numbering plan area, a procedure that results in an overlay numbering ...
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