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It was the only new area code created in Illinois between 1947 and the 1989 creation of area code 708. On October 24, 2021, area code 309 was transitioned to ten-digit dialing, despite not being part of an overlay complex, in which multiple area codes are assigned to a numbering plan area. The area code had telephone numbers assigned for the ...
In the group of original North American area codes, established in 1947, all of the Chicago metropolitan area was part of numbering plan area 312, the rest of northern Illinois was 815, central Illinois was 217, and southern Illinois was 618. In 1957, area code 815 was split for the assignment of area code 309 to western central Illinois.
An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan (NANP) that has multiple area codes assigned. Overlay complexes are used to add central office prefixes in an NPA to increase the number of available telephone numbers. [1]
The area codes in the state of North Carolina are as follows: 252 - North Coastal Plain region in the northeast corner of the state, containing the Outer Banks (split from 919 in 1998) 910 / 472 - South Coastal Plain region in the southeast corner of the state, including Wilmington (split from 919 in 1993; 472 created as overlay beginning on ...
537 reserved as a fifth area code for the region. 743: North Carolina (the Piedmont Triad, Wilkesboro, Roxboro, and most of northwestern North Carolina) May 23, 2016: overlaid on 336; 744: not in use; available for non-geographic assignment easily recognizable code (ERC) 745–746: not in use; available for geographic assignment 747
Pages in category "Area codes in Illinois" The following 12 pages are in this category, out of 12 total. ... Area codes 309 and 861; Area code 312; Area code 447 ...
Pages for logged out editors learn more. Contributions; Talk; Area code 309
On October 7, 2007, area code 331 began overlaying area code 630, making ten-digit dialing mandatory in the area. The Illinois side of the Chicago area– 312 / 773 / 872 , 708, 847/224, 630/331 and portions of 815/779 –is one of the largest local calling areas in the United States; with few exceptions, no long-distance charges are applied ...