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Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Pages for logged out editors learn more. Contributions; Talk; List of South Dakota area codes
Pages in category "Area codes in South Dakota" This category contains only the following page. This list may not reflect recent changes. 0–9. Area code 605
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.
To find out the 25 poorest and richest area codes, GOBankingRates used the 2015 Census Community Survey, the most recent data available, to rank cities across the nation in order of mean household ...
North Dakota United States (Includes territories and possessions) United States Independent State in the World Washington, DC US ND 38 1950-01-01 1 67 6701 South Dakota United States (Includes territories and possessions) United States Independent State in the World Washington, DC US SD 46 1950-01-01 1 71 7101 Arkansas
List of Nebraska area codes; List of Nevada area codes; List of New Hampshire area codes; List of New Jersey area codes; List of New Mexico area codes; List of New York area codes; List of North Carolina area codes; List of North Dakota area codes
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.