- Source: Area code 605
Area code 605 is the telephone area code in the North American Numbering Plan for the entire U.S. state of South Dakota. The numbering plan area was designated in 1947, when the American Telephone and Telegraph Company (AT&T) devised a comprehensive telephone numbering plan for the United States and Canada.
Before October 2021, area code 605 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. Area code 605 was therefore scheduled to transition to ten-digit dialing by October 24, 2021. Current projections suggest that South Dakota will require a second area code by late 2026, as the existing 605 area code is nearing exhaustion.
Service area
The numbering plan area includes the following communities, which are serviced by the listed central office prefixes.
See also
List of North American Numbering Plan area codes
References
External links
NANPA area code map of South Dakota
Kata Kunci Pencarian:
- Daftar kode area dunia
- California
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- Transjakarta
- Raksa
- Daftar prefektur Jepang berdasarkan populasi
- Lipjan
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- Perumahan di Jepang
- Fez
- Area code 605
- Area code 320
- List of North American Numbering Plan area codes
- Area code 307
- Area codes 402 and 531
- Original North American area codes
- Area codes 905, 289, 365, and 742
- Area code 712
- Area codes 705, 249, and 683
- Area codes 519, 226, 548, and 382
