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May 20, 2024 · An overlay doesn’t require customers to change their existing area code or telephone number. The following state list is area codes that require 10-digit dialing, even for local calls. For information on recent area code activities and how they may affect you, review your state and area code.
The 916 area code is expected to run out of numbers in 2019. A new area code, 279, is expected to be introduced in the Sacramento region in 2019. What Time Zone Is Area Code 916 Located In?
- Illinois Area Code Map
- Area Codes For The Largest Cities in Illinois
- Illinois Area Code List
Illinois currently utilizes 15 area codes. When first established by AT&T and the Bell System in 1947, 217 covered central Illinois, 312 covered the Chicago metropolitan area, 618 covered southern Illinois including East St. Louis and Carbondale, and 815 covered northern Illinois except Chicago and Quad Cities. The most recently added was 464 in 20...
Addison 331/630Algonquin 847/224Alton 618Arlington Heights 847/224Sources: North American Numbering Plan Administration (NANPA), telecom providers, and the U.S. Census Bureau.
As densely populated areas grow, an area code may run out of available phone numbers. In that case, it is common to create a new area code that serves the same area as an existing one (called an overlay) Learn if all or part of the city currently has an overlay. Search by City: By Number:
An area code overlay is a numbering plan area ... Illinois: 226, 382, 548: 519: ... 253, and 425 as those area codes run out of numbers: 567: 419:
Lookup area code 916 details: major cities and timezone. View the 916 area code map in California. Find the name of any phone number in area code 916.
Two years later, area code 861 went into effect on February 24, 2023, as an overlay with 309. Area code 730 went into effect on July 7, 2023, as an overlay complex with 618. As of that date, all numbering plan areas of Illinois are therefore overlays. See also. List of North American Numbering Plan area codes; References
