Area code 423 is a telephone area code in the North American Numbering Plan for the U.S. state of Tennessee. It comprises two disconnected areas of East Tennessee that are separated by area code 865.
Principal cities in the northern part of the area code region are Morristown, Greeneville, Kingsport, Johnson City, and Bristol (more commonly known as the Tri-Cities region). The principal cities in the south are Chattanooga and Cleveland.
Areacode423 is a telephone areacode in the North American Numbering Plan for the U.S. state of Tennessee. It comprises two disconnected areas of East...
touches Alabama's areacode 256/938 and 334 on the far west, Tennessee's areacode423 on the northwest, North Carolina's areacode 828 and Upstate South...
Chattanooga, Knoxville, and the Tri-Cities—was assigned areacode423. The dividing line between 615 and 423 mostly tracked along the boundary between the Eastern...
River received the new areacode 615. This division remained in place for 41 years, until areacode423 was created as the areacode for most of East Tennessee...
areacode next year". CBC News. 14 February 2018. Retrieved 19 February 2018. https://www.nationalnanpa.com/enas/npasOverLast10YearsReport.do "PL-423:...
Areacode423 is a telephone areacode in the North American Numbering Plan that has been withdrawn from use and is available for a new assignment. The...
Areacode 828 is a telephone areacode in the North American Numbering Plan (NANP) for most of the western third of the U.S. state of North Carolina. The...
Areacodes 573 and 235 are telephone areacodes in the North American Numbering Plan (NANP) for most of the eastern half of the U.S. state of Missouri...
Areacode 434 is a telephone areacode in the North American Numbering Plan (NANP) for the south-central area of the Commonwealth of Virginia. Lynchburg...
provided by a division of the telephone numbering plan into groups of areacodes for the following regions: Telephone numbers in Mexico "Telephone numbering...
Areacode 901 is a telephone areacode in the North American Numbering Plan (NANP) for Memphis, Tennessee, and most of its inner-ring suburbs. It is the...
Areacode 276 is a telephone areacode in the North American Numbering Plan (NANP) for the western part of the U.S. state of Virginia. It was established...
selection of areacodes. For example, when areacode423 (East Tennessee) was split in 1999, the region surrounding Knoxville was assigned areacode 865, chosen...
Areacode 662 is a telephone areacode in the North American Numbering Plan (NANP) for the northern half of the U.S. state of Mississippi, including the...
Areacodes 256 and 938 are telephone areacodes in the North American Numbering Plan (NANP) for North Alabama, as well as some eastern portions of the...
Areacodes 617 and 857 are telephone areacodes in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts, serving the city of Boston...
Areacode 731 is a telephone areacode in the North American Numbering Plan (NANP) for the western part of the U.S. state of Tennessee. The numbering plan...
in 2001. 865 - Knoxville: Initially split from 423 in 1999. 901 - Memphis: An original NANPA areacode, initially covering the entire state in 1947. 931...
North American areacode 931 is the telephone areacode serving a horseshoe-shaped region of 28 counties in Middle Tennessee. It covers almost all of Middle...
Areacodes 541 and 458 are telephone areacodes in the North American Numbering Plan (NANP) for most of the U.S. state of Oregon, excluding only the northwestern...
Areacode 606 is a telephone areacode serving the eastern half of south-central and all of the eastern part of the Commonwealth of Kentucky. Cities and...
Areacodes 208 and 986 are telephone areacodes in the North American Numbering Plan for all of Idaho. Areacode 208 is one of the 86 original area codes...
list of future areacodes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the...
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