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New area code Affected NPA Jurisdiction Projected exhaust date Effective date 257: 236/672/778, 604, 250: British Columbia: 2025 – 4th Qtr May 24, 2025: 357: 559: California: 2025 – 3rd Qtr March 26, 2025: 457: 318: Louisiana: 2026 – 1st Qtr September 25, 2025: 621: 713/281/832/346: Texas: 2025 – 3rd Qtr January 23, 2025: 679: 313 ...
an N11 short code for the Suicide & Crisis Lifeline; not assignable as an area code June 16, 2022: Created conflicts in area code regions that allowed seven-digit dialling and had been using numbers beginning in 988; a total of 82 area codes switched to ten-digit dialling as a result. 989
Lists of North American area codes. The largest telephone numbering plan in North American is the North American Numbering Plan (NANP), serving 25 regions or countries. Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union .
The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably Mexico, do not participate with the NANP.
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.
407. Central Florida. In addition to being the sole area code in the Space Coast region around the Kennedy Space Center, this is the only partial overlay area code in North America. 323. 213. Central Los Angeles, incl. Downtown L.A. and Hollywood. 326. 937. Southwest Ohio.
As of July 2023, California has 38 active area codes. Area code. Service area. Notes. 209. Stockton, Modesto, Merced, Turlock; the northern San Joaquin Valley and the central Sierra Nevada range. Split from 415 on October 26, 1957; split off 559 on November 14, 1998; overlaid with 350 on November 28, 2022. 213.
This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021. On May 11, 2022, the North American Numbering Plan Administrator (NANPA) authorized the new area code 329 for an overlay of the 845 area, with an effective in-service date of March 24, 2023. Service area. Numbering plan area 845/329 includes the ...