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The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.
List of Tennessee area codes. Map of all Tennessee area codes. 423 - Chattanooga, Johnson City, Kingsport, Bristol: Initially split from 615 in 1995. 615 and 629 (overlay) - Greater Nashville, including Murfreesboro, Mount Juliet: 615 initially split from 901 in a 1954 flash-cut. The 629 overlay for the entire area code was made effective in 2015.
New area code Affected NPA Jurisdiction Projected exhaust date Effective date 257: 236/672/778, 604, 250: British Columbia: 2025 – 4th Qtr May 24, 2025: 357: 559: California: 2025 – 3rd Qtr March 26, 2025: 457: 318: Louisiana: 2026 – 1st Qtr September 25, 2025: 471: 662: Mississippi: 2026 – 3rd Qtr TBD 483: 334: Alabama: 2026 – 3rd ...
The longest interstate highway in Tennessee is Interstate 40, at a length of 454.81 miles (731.95 km). The segment of I-40 in Tennessee is also the longest segment of all of the states the route traverses. The shortest mainline interstate highway in Tennessee is I-55, at a length of 12.28 miles (19.76 km) in Memphis.
02010-01-01. 2010. Proposed I-75 bypass of Knoxville, also proposed to be extended to I-40 at exit 407 ( SR 66) to provide a complete northern beltway of Knoxville and provide a more direct route to Sevier County/Great Smoky Mountains National Park. SR 476. 11.8. 19.0. SR 50 in Broadview.
Highway markers for U.S. Highway 70 and U.S. Highway 321 U.S Highways in Tennessee highlighted in yellow System information Maintained by TDOT Highway names Interstates Interstate XX (I-XX) US Highways U.S. Route XX (US XX) State State Route XX (SR XX) System links Tennessee State Routes Interstate US State The U.S. Highways in Tennessee are the segments of the United States Numbered Highway ...
1. International access. 011. List of dialing codes. The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably ...
There are 70 primary interstate highways in the 48 contiguous United States as well as five former and one future primary interstate highways. This number does not include auxiliary Interstate Highways . Serves six states: Texas, Mississippi, Kentucky, Indiana, Michigan. Planned/started in 3 more: Louisiana, Arkansas, Tennessee.