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NDC: 423

This is the National Destination Code(NDC):423 page list. Its detail is as below.
Area code 423 was first put in service September 11, 1995. In 1999, area code 423 was split, and some of the phone numbers had to be updated to area code 865 on that date. Currently, the largest city it serves is Chattanooga, TN, and it overlaps coverage areas with area code .
Prefix State Primary city Usage Carrier
(423) 520- Tennessee Madisonville Landline Us Lec Of Tennessee, Inc
(423) 521- Tennessee Chattanooga Wireless Powertel Atlanta Licenses
(423) 522- Tennessee Morristown Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 523- Tennessee Bulls Gap Wireless Cellco Partnership DBA Verizon Wireless
(423) 525- Tennessee Greeneville Landline Level 3 Communications
(423) 526- Tennessee New Tazewell Landline Centurytel Of Clairborne DBA Centurylink-claiborne
(423) 527- Tennessee Chattanooga Landline Cellular Page
(423) 528- Tennessee Greeneville Wireless Bandwidth.com Clec
(423) 529- Tennessee Georgetown Landline Deltacom
(423) 530- Tennessee Kingsport Wireless Sprint Spectrum L.p.
(423) 531- Tennessee Chattanooga Landline Electric Power Board Of Chattanooga
(423) 532- Tennessee Newport Landline Us Lec Of Tennessee, Inc
(423) 533- Tennessee Pikeville Landline Bledsoe Telephone Cooperative
(423) 534- Tennessee Bristol Wireless Cellco Partnership DBA Verizon Wireless
(423) 535- Tennessee Chattanooga Landline Brooks Fiber Communications Of Tennessee- Tn
(423) 536- Tennessee Sweetwater Landline Us Lec Of Tennessee, Inc
(423) 537- Tennessee Bulls Gap Landline Us Lec Of Tennessee, Inc
(423) 538- Tennessee Bluff City Landline United Telephone-southeast-tn DBA Centurylink
(423) 539- Tennessee Oneida Wireless New Cingular Wireless PCS - GA
(423) 541- Tennessee Tellico Plains Landline Tellico Telephone Co.
(423) 542- Tennessee Elizabethton Landline United Telephone-southeast-tn DBA Centurylink
(423) 543- Tennessee Elizabethton Landline United Telephone-southeast-tn DBA Centurylink
(423) 544- Tennessee Chattanooga Wireless Sprint Spectrum L.p.
(423) 545- Tennessee Madisonville Landline Level 3 Communications
(423) 546- Tennessee Bulls Gap Landline Level 3 Communications
(423) 547- Tennessee Elizabethton Landline United Telephone-southeast-tn DBA Centurylink
(423) 548- Tennessee Copperhill Landline Etc Communications
(423) 550- Tennessee Chattanooga Landline Cellular Page
(423) 551- Tennessee Chattanooga Landline Centurylink Communications LLC
(423) 552- Tennessee Greeneville Wireless Cellco Partnership DBA Verizon Wireless
(423) 553- Tennessee Chattanooga Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 554- Tennessee Pikeville Landline Bledsoe Telephone Cooperative
(423) 557- Tennessee Sweetwater Wireless Suncom DBA T-mobile Usa
(423) 558- Tennessee Chattanooga Landline Alec
(423) 559- Tennessee Cleveland Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 561- Tennessee Sweetwater Landline Centurylink Communications LLC
(423) 562- Tennessee La Follette Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 563- Tennessee La Follette Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 566- Tennessee La Follette Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 567- Tennessee Dayton Wireless New Cingular Wireless PCS - GA
(423) 568- Tennessee Niota Landline Tellico Telephone Co.
(423) 569- Tennessee Oneida Landline Highland Telephone Cooperative
(423) 570- Tennessee Dayton Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 571- Tennessee Kingsport Wireless Cellco Partnership DBA Verizon Wireless
(423) 572- Tennessee Englewood Wireless United States Cellular Corp. - Tennessee
(423) 573- Tennessee Bristol Landline Bristol Tennessee Essential Services
(423) 574- Tennessee Blountville Landline Bristol Tennessee Essential Services
(423) 575- Tennessee Bluff City Landline Bristol Tennessee Essential Services
(423) 576- Tennessee Unknown East Tennessee Network
(423) 578- Tennessee Kingsport Landline United Telephone-southeast-tn DBA Centurylink
(423) 579- Tennessee Kingsport Landline Mountainet Telephone Company-va
(423) 580- Tennessee Chattanooga Wireless New Cingular Wireless PCS - GA
(423) 581- Tennessee Morristown Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 582- Tennessee Chattanooga Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 584- Tennessee Cleveland Wireless New Cingular Wireless PCS - GA
(423) 585- Tennessee Morristown Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 586- Tennessee Morristown Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 587- Tennessee Morristown Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 588- Tennessee Greeneville Wireless Cellco Partnership DBA Verizon Wireless
(423) 591- Tennessee Chattanooga Landline Ymax Communications Corp.
(423) 592- Tennessee La Follette Wireless United States Cellular Corp. - Tennessee
(423) 593- Tennessee Chattanooga Wireless Sprint Spectrum L.p.
(423) 594- Tennessee Dayton Landline AT&T Local
(423) 595- Tennessee Chattanooga Wireless Sprint Spectrum L.p.
(423) 596- Tennessee Chattanooga Wireless New Cingular Wireless PCS - GA
(423) 598- Tennessee Chattanooga Wireless New Cingular Wireless PCS - GA
(423) 599- Tennessee Cleveld Wireless Cellco Partnership DBA Verizon Wireless
(423) 600- Tennessee Apison Landline Comcast Phone Of Tennessee
(423) 601- Tennessee Bulls Gap Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 602- Tennessee Chattanooga Wireless 365 Wireless
(423) 603- Tennessee Cumberland Gap Landline Sbc Internet Services
(423) 605- Tennessee Chattanooga Wireless Cellco Partnership DBA Verizon Wireless
(423) 606- Tennessee Englewood Landline Comcast Phone Of Tennessee
(423) 607- Tennessee Limestone Wireless Cellco Partnership DBA Verizon Wireless
(423) 608- Tennessee Newport Wireless Cellco Partnership DBA Verizon Wireless
(423) 610- Tennessee Johnson City Landline United Telephone-southeast-tn DBA Centurylink
(423) 612- Tennessee Bristol Wireless Cellco Partnership DBA Verizon Wireless
(423) 613- Tennessee Newport Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 614- Tennessee Cleveland Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 615- Tennessee College Dale Landline Comcast Phone Of Tennessee
(423) 617- Tennessee Athens Wireless Powertel Nashville Licenses
(423) 618- Tennessee Chattanooga Wireless Cellco Partnership DBA Verizon Wireless
(423) 619- Tennessee Chattanooga Wireless Cellco Partnership DBA Verizon Wireless
(423) 620- Tennessee Greeneville Wireless Cellco Partnership DBA Verizon Wireless
(423) 622- Tennessee Chattanooga Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 623- Tennessee Newport Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 624- Tennessee Chattanooga Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 625- Tennessee Newport Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 626- Tennessee New Tazewell Landline Centurytel Of Clairborne DBA Centurylink-claiborne
(423) 627- Tennessee Robbins Landline Highland Telephone Cooperative
(423) 628- Tennessee Sunbright Landline Highland Telephone Cooperative
(423) 629- Tennessee Chattanooga Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 630- Tennessee Johnson City Landline Telescan
(423) 631- Tennessee Johnson City Landline Charter Fiberlink - Tennessee
(423) 634- Tennessee Chattanooga Landline Bellsouth Telecomm Inc DBA South Central Bell Tel
(423) 635- Tennessee Chattanooga Wireless Cricket Communications
(423) 636- Tennessee Greeneville Landline United Telephone-southeast-tn DBA Centurylink
(423) 637- Tennessee Chattanooga Wireless Cellco Partnership DBA Verizon Wireless
(423) 638- Tennessee Greeneville Landline United Telephone-southeast-tn DBA Centurylink
(423) 639- Tennessee Greeneville Landline United Telephone-southeast-tn DBA Centurylink