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It was created in June 1999 as a split from area code 616. 231 is essentially the northern half of the old 616 area code. 616 previously covered the entire western half of the state of Michigan, extending west from the north-south line aligned with the Mackinac Bridge. Area Code 231 serves all of Northwestern Lower Michigan.
Pages in category "Area codes in Michigan". The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes . Categories: Communications in Michigan. Area codes in the United States by state or territory.
8325 Oberstaufen -Thalkirchdorf. 8326 Fischen im Allgäu. 8327 Rettenberg. 8328 Balderschwang. 8329 former area code of Kleinwalsertal, an Austrian exclave in Germany, now accessible through Austria country code +43 5517. 833 --. 8330 Legau. 8331 Memmingen.
5 de jun. de 1999 · Area code 231 is located in Central & NW Michigan (Lower Peninsula) and includes Grant. View the 231 area code map, major cities, location, timezone and more on TeraCodes.com.
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.
On January 1, 1947, the first North American area codes were issued in regions where standard 7 digit dialing codes were scheduled to be exhaused the soonest. By adding a 3 digit prefix to a 7 digit local number, this allowed for hundreds of millons of new phone numbers to be issued.
Area code in Michigan, United States. Area code 231 (Q4788558) ... Area code 231. Area code in Michigan, United States. 231; Statements. instance of. telephone prefix.
