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Michigan's numbering plan expanded from three area codes in 1947 to twelve: 1947: Area codes 313, 517 and 616 are three of the original 86 area codes in the North American Numbering Plan. 1961: Area code 906 was created in the first split of 616. 1993: Area code 810 was created in the first split of 313. 1997: Area code 734 was created in the ...
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.
www.rocklin.ca.us. Rocklin is a city in Placer County, California, United States, about 22 miles (35 km) from Sacramento, and about 6.1 miles (9.8 km) northeast of Roseville in the Sacramento metropolitan area. Besides Roseville, it shares borders with Granite Bay, Loomis and Lincoln. As of the 2020 census, Rocklin's population was 71,601.
Area code 810. Appearance. Coordinates: 43°00′N83°00′W43.0°N 83.0°W. Map of Michigan, having numbering plan area 810 highlighted in green. Area code 810 is a telephone area code in the North American Numbering Plan for the east-central part in the U.S. state of Michigan. The numbering plan area (NPA) comprises the cities of Flint ...
Area code 586. Coordinates: 42.6°N 83.0°W. Map of area code 586 in Michigan. Area code 586 is the telephone area code serving much of Macomb County, Michigan, introduced in 2001 as a split from area code 810. Its territory was originally part of area code 313.
Coordinates: 42.3°N 83.1°W. Map of Michigan area codes. Area code 313 is a telephone area code of the North American Numbering Plan serving Detroit and most of its closest suburbs in Wayne County, Michigan. It includes the enclave cities Hamtramck and Highland Park, as well as Allen Park, Dearborn, Dearborn Heights, Ecorse, the Grosse Pointe ...
Rockland is an unincorporated community and census-designated place in the township at 46°44′17″N 89°10′47″W / 46.73806°N 89.17972°W / 46.73806; -89.17972. . [4] The Rockland Mine opened in 1847 and a post office named Rockland opened in January 1853 and closed in September 1860. A post office also opened at Minesota ...
List of Michigan area codes. 0–9. Area code 231. Area codes 248 and 947. Area code 269. Area code 313. Area code 517. Area code 586. Area code 616.