423 Area Code: Location, Cities, Map And Time Zone

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Area code 423 is in Tennessee, USA , spanning 25 counties and serving 136 cities , including Chattanooga, Johnson City or Kingsport; it currently uses 761 prefixes , assigned from 423-200-XXXX through 423-999-XXXX.

In service since September 11, 1995, area code 423 is the parent Numbering Plan Area in overlay complex 423/729.

Area code 423 spans two different time zones. The current local time is either or , depending on where you are calling (city list on this page includes time zones).

423 area code location on a map
© OpenStreetMap contributorsFor exact NPA boundaries see official 423 area code map

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More Tennessee area codes:

  • 615
  • 629
  • 729
  • 731
  • 865
  • 901
  • 931

Locate any 423-NXX prefix:

423-200-XXXX --- 423-299-XXXX
NPANXX Carrier1 Area Served2 Date3
423-200 Level 3 Communications Morristown 7/18/2002
423-201 Level 3 Communications Lafollette 7/18/2002
423-202 MCIMetro Access Transmission Services Johnson City 12/16/2003
423-203 Dish Wireless Chattanooga 2/3/2022
423-205 Onvoy Etowah 3/9/2016
423-206 Rclec Chattanooga 11/30/2018
423-207 Level 3 Communications Midway N/A
423-208 New Cingular Wireless PCS Chattanooga 11/1/2006
423-209 Bellsouth Telecomm Chattanooga N/A
423-210 United States Cellular Tellico Plains N/A
423-212 Level 3 Communications Blountville 7/18/2002
423-213 Suncom Elizabethton 11/7/2001
423-214 United States Cellular Englewood N/A
423-215 Cellco Partnership Oneida 12/3/2004
423-216 Paetec Itel Benton 4/28/2005
423-217 Level 3 Communications Bristol 7/18/2002
423-218 Level 3 Communications Johnson City 7/18/2002
423-219 Teleport Communications America Charleston 10/1/2019
423-220 Paetec Itel Erwin 4/4/2001
423-221 USA Mobility Wireless Chattanooga N/A
423-222 New Cingular Wireless PCS Morristown N/A
423-223 New Cingular Wireless PCS Oneida 11/30/2006
423-224 United Telephone-Southeast-Tn Kingsport N/A
423-225 Bandwidth.com Clec Benton N/A
423-226 Bandwidth.com Clec Church Hill 5/28/2010
423-227 Powertel Atlanta Licenses Chattanooga N/A
423-228 Paetec Itel South Pittsburgh N/A
423-229 United Telephone-Southeast-Tn Kingsport N/A
423-230 United Telephone-Southeast-Tn Kingsport N/A
423-231 New Cingular Wireless PCS Morristown N/A
423-232 United Telephone-Southeast-Tn Johnson City N/A
423-233 Pro Page Partners Johnson City N/A
423-234 United Telephone-Southeast-Tn Baileyton N/A
423-235 Bellsouth Telecomm Bulls Gap N/A
423-236 Brightspeed Of Southern Tennessee Apison N/A
423-237 New Cingular Wireless PCS Newport N/A
423-238 Brightspeed Of Southern Tennessee Ooltewah N/A
423-239 United Telephone-Southeast-Tn Midway (Sullivan) N/A
423-240 Cellco Partnership Chattanooga N/A
423-241 Cellco Partnership Copper Basin 4/11/2003
423-242 Teleport Communications America Chattanooga N/A
423-243 Teleport Communications America Soddy-Daisy N/A
423-244 Teleport Communications America Cleveland N/A
423-245 United Telephone-Southeast-Tn Kingsport N/A
423-246 United Telephone-Southeast-Tn Kingsport N/A
423-247 United Telephone-Southeast-Tn Kingsport N/A
423-248 United States Cellular Newport N/A
423-249 Bellsouth Telecomm Fork Ridge N/A
423-250 Twin Lakes Communications Cleveland 4/27/2017
423-251 MetroPCS Kingsport 1/5/2017
423-252 Paetec Itel Athens N/A
423-253 Tellico Tel. Co. Tellico Plains N/A
423-254 Paetec Itel Morristown N/A
423-255 Powertel Atlanta Licenses Chattanooga N/A
423-256 United Telephone-Southeast-Tn Church Hill N/A
423-257 United Telephone-Southeast-Tn Limestone N/A
423-258 New Cingular Wireless PCS Morristown N/A
423-259 United States Cellular New Tazewell 4/27/2004
423-260 Cellco Partnership Chattanooga 8/20/2007
423-261 Tellico Tel. Co. Coker Creek N/A
423-262 United Telephone-Southeast-Tn Johnson City N/A
423-263 Bellsouth Telecomm Etowah N/A
423-264 Comcast IP Phone Vonore 7/21/2011
423-265 Bellsouth Telecomm Chattanooga N/A
423-266 Bellsouth Telecomm Chattanooga N/A
423-267 Bellsouth Telecomm Chattanooga N/A
423-268 New Cingular Wireless PCS Johnson City 6/8/2012
423-269 Cellco Partnership Chattanooga 1/20/2017
423-270 Cellco Partnership Erwin 4/24/2013
423-271 Cellco Partnership Sweetwater 4/14/2011
423-272 Bellsouth Telecomm Rogersville N/A
423-273 Powertel Nashville Licenses Morristown N/A
423-274 United Telephone-Southeast-Tn Bristol N/A
423-275 Paetec Itel Chattanooga 6/30/2022
423-276 New Cingular Wireless PCS Kingsport N/A
423-277 Powertel Nashville Licenses Morristown 8/29/2001
423-278 Level 3 Communications Greeneville N/A
423-279 United Telephone-Southeast-Tn Blountville N/A
423-280 Cellco Partnership Chattanooga N/A
423-281 Charter IP Enabled Services Butler 11/1/2011
423-282 United Telephone-Southeast-Tn Johnson City N/A
423-283 United Telephone-Southeast-Tn Johnson City N/A
423-284 New Cingular Wireless PCS Cleveland N/A
423-285 New Cingular Wireless PCS Dayton N/A
423-286 Highland Tel. Coop Oneida N/A
423-287 Bellsouth Telecomm Chattanooga N/A
423-288 United Telephone-Southeast-Tn Kingsport N/A
423-289 Powertel Nashville Licenses Morristown 6/18/2001
423-290 Cellco Partnership Chattanooga N/A
423-291 Suncom Mountain City 8/31/2001
423-292 Suncom Fall Branch N/A
423-293 Powertel Nashville Licenses Rogersville 8/31/2001
423-294 Level 3 Communications Chattanooga 4/3/2001
423-295 Tellico Tel. Co. Ball Play N/A
423-296 Bellsouth Telecomm Chattanooga N/A
423-297 Level 3 Communications Elizabethton N/A
423-298 AT&T Chattanooga N/A
423-299 Level 3 Communications Benton 11/2/2003
423-300-XXXX --- 423-398-XXXX
NPANXX Carrier1 Area Served2 Date3
423-300 Cellco Partnership Sneedville 4/29/2003
423-301 MCIMetro Access Transmission Services South Pittsburgh 11/28/2011
423-302 Bandwidth.com Clec Johnson City 11/10/2008
423-303 Paetec Itel Cleveland N/A
423-304 New Cingular Wireless PCS Chattanooga N/A
423-305 Comcast IP Phone Chattanooga 2/23/2007
423-306 Cellco Partnership Midway (Sullivan) N/A
423-307 Paetec Itel Morristown 10/24/2005
423-308 Paetec Itel Chattanooga N/A
423-309 Cellco Partnership Chattanooga N/A
423-310 New Cingular Wireless PCS Cleveland 10/11/2002
423-312 Cellco Partnership Morristown N/A
423-313 Powertel Atlanta Licenses Chattanooga 5/9/2001
423-314 Powertel Atlanta Licenses Chattanooga N/A
423-315 New Cingular Wireless PCS Chattanooga N/A
423-316 Powertel Atlanta Licenses Chattanooga N/A
423-317 Bellsouth Telecomm Morristown N/A
423-318 Bellsouth Telecomm Morristown N/A
423-319 Highland Tel. Coop Huntsville N/A
423-320 New Cingular Wireless PCS Chattanooga N/A
423-321 Bellsouth Telecomm Chattanooga N/A
423-322 Cellco Partnership Chattanooga N/A
423-323 United Telephone-Southeast-Tn Blountville N/A
423-324 Highland Tel. Coop Petros N/A
423-325 United Telephone-Southeast-Tn Blountville N/A
423-326 Bellsouth Telecomm Chattanooga N/A
423-327 Cellco Partnership Bulls Gap N/A
423-328 Comcast IP Phone Johnson City 2/19/2008
423-329 New Cingular Wireless PCS Greeneville 3/6/2002
423-330 New Cingular Wireless PCS Erwin 3/6/2002
423-331 Powertel Atlanta Licenses Cleveland N/A
423-332 Bellsouth Telecomm Soddy-Daisy N/A
423-333 Powertel Nashville Licenses Athens N/A
423-334 Bellsouth Telecomm Decatur N/A
423-335 Cellco Partnership Midway (Sullivan) N/A
423-336 Bellsouth Telecomm Charleston N/A
423-337 Bellsouth Telecomm Sweetwater N/A
423-338 Bellsouth Telecomm Benton N/A
423-339 Bellsouth Telecomm Cleveland N/A
423-340 Suncom Bristol N/A
423-341 Cellco Partnership Bristol N/A
423-342 New Cingular Wireless PCS Elizabethton 3/6/2002
423-343 United Telephone-Southeast-Tn Kingsport N/A
423-344 Bellsouth Telecomm Chattanooga N/A
423-345 Bellsouth Telecomm Surgoinsville N/A
423-346 Highland Tel. Coop Wartburg N/A
423-347 Bandwidth.com Clec Rogersville N/A
423-348 United Telephone-Southeast-Tn Fall Branch N/A
423-349 United Telephone-Southeast-Tn Sullivan Gardens N/A
423-350 Commio Bristol 7/1/2022
423-351 Bellsouth Telecomm Sweetwater N/A
423-352 Paetec Itel Lafollette N/A
423-353 Paetec Itel Morristown 3/16/2011
423-354 United Telephone-Southeast-Tn Blountville N/A
423-355 New Cingular Wireless PCS Chattanooga N/A
423-356 New Cingular Wireless PCS Chattanooga 2/28/2001
423-357 United Telephone-Southeast-Tn Church Hill N/A
423-358 Powertel Nashville Licenses Rogersville 3/7/2002
423-359 United Telephone-Southeast-Tn Greeneville 8/13/2002
423-360 Cellco Partnership Midway (Sullivan) N/A
423-361 Cellco Partnership Midway (Sullivan) N/A
423-362 New Cingular Wireless PCS Chattanooga N/A
423-363 United States Cellular Huntsville 2/22/2001
423-364 New Cingular Wireless PCS Chattanooga N/A
423-365 Bellsouth Telecomm Spring City N/A
423-366 New Cingular Wireless PCS Bristol N/A
423-367 New Cingular Wireless PCS Kingsport N/A
423-368 Cellco Partnership Athens N/A
423-369 Highland Tel. Coop Oakdale N/A
423-370 Onvoy Athens N/A
423-371 Powertel Nashville Licenses Sweetwater N/A
423-372 Level 3 Communications Jellico N/A
423-373 Onvoy Bulls Gap N/A
423-374 Onvoy Lafollette N/A
423-375 AT&T Enterprises Benton 3/18/2010
423-376 Onvoy Madisonville N/A
423-377 United States Cellular Lafollette N/A
423-378 United Telephone-Southeast-Tn Kingsport N/A
423-379 Onvoy Newport N/A
423-380 Bandwidth.com Clec Cleveland N/A
423-381 Powertel Nashville Licenses Athens N/A
423-382 Onvoy Sneedville N/A
423-383 Suncom Bristol 11/14/2001
423-384 Suncom Fall Branch 11/14/2001
423-385 Paetec Itel Chattanooga N/A
423-386 Bellsouth Telecomm Chattanooga N/A
423-387 New Cingular Wireless PCS Johnson City 10/11/2022
423-388 Suncom Erwin 3/22/2002
423-389 Cellco Partnership Midway (Sullivan) 5/9/2002
423-390 United Telephone-Southeast-Tn Kingsport 8/13/2002
423-391 United Telephone-Southeast-Tn Bluff City N/A
423-392 United Telephone-Southeast-Tn Kingsport N/A
423-393 Charter IP Enabled Services Bulls Gap N/A
423-394 New Cingular Wireless PCS Chattanooga N/A
423-395 Powertel Nashville Licenses Athens 11/4/2022
423-396 Brightspeed Of Southern Tennessee Collegedale N/A
423-397 Bandwidth.com Clec Benton 7/6/2017
423-398 MetroPCS Kingsport 3/1/2011
423-400-XXXX --- 423-499-XXXX
NPANXX Carrier1 Area Served2 Date3
423-400 Powertel Atlanta Licenses Chattanooga N/A
423-401 Paetec Itel Soddy-Daisy N/A
423-402 Bandwidth.com Clec Chattanooga 6/20/2008
423-403 Bandwidth.com Clec South Pittsburgh 5/1/2017
423-404 New Cingular Wireless PCS Madisonville N/A
423-405 Powertel Nashville Licenses Athens 3/29/2011
423-406 Comcast IP Phone Midway (Sullivan) 3/13/2008
423-407 Twin Lakes Communications Spring City 1/10/2020
423-408 Teleport Communications America Kingsport 10/29/2009
423-409 USA Mobility Wireless Bulls Gap N/A
423-410 United Telephone-Southeast-Tn Johnson City N/A
423-412 USA Mobility Wireless Johnson City N/A
423-413 Cellco Partnership Chattanooga N/A
423-414 Peace Communications Chattanooga 4/1/2010
423-415 Cellco Partnership Newport 3/11/2010
423-416 Cellco Partnership Midway (Sullivan) N/A
423-417 MCIMetro Access Transmission Services Chattanooga 8/23/2017
423-418 Cellco Partnership Midway (Sullivan) N/A
423-419 Cellco Partnership Cumberland Gap 2/21/2012
423-420 Bellsouth Telecomm Madisonville N/A
423-421 MetroPCS Chattanooga N/A
423-422 United Telephone-Southeast-Tn Mosheim N/A
423-423 Charter IP Enabled Services Limestone 10/16/2025
423-424 Paetec Itel Chattanooga N/A
423-425 Bellsouth Telecomm Chattanooga 12/11/2001
423-426 Cellco Partnership Limestone 3/5/2002
423-427 Onvoy Johnson City 3/5/2018
423-428 Paetec Itel Dayton 4/22/2002
423-429 New Cingular Wireless PCS Kingsport 1/21/2008
423-430 Nuso Johnson City 3/11/2013
423-431 United Telephone-Southeast-Tn Johnson City N/A
423-432 Powertel Atlanta Licenses Chattanooga N/A
423-433 United Telephone-Southeast-Tn Johnson City N/A
423-434 United Telephone-Southeast-Tn Johnson City N/A
423-435 Level 3 Communications Athens 5/2/2002
423-436 Level 3 Communications Madisonville 5/2/2002
423-437 Level 3 Communications Lafollette 5/2/2002
423-438 Level 3 Communications Morristown 5/2/2002
423-439 United Telephone-Southeast-Tn Johnson City N/A
423-440 Cellco Partnership Elizabethton 10/14/2009
423-441 Powertel Kentucky Licenses Cumberland Gap 1/7/2003
423-442 Bellsouth Telecomm Madisonville N/A
423-443 Level 3 Communications Chattanooga 5/7/2002
423-444 Cellco Partnership Limestone 1/8/2010
423-445 AT&T Enterprises Surgoinsville 6/25/2002
423-446 Bandwidth.com Clec Fall Branch 7/6/2002
423-447 Bledsoe Tel. Coop. Pikeville N/A
423-448 New Cingular Wireless PCS Pikeville 9/23/2009
423-449 Paetec Itel Lafollette 6/13/2002
423-450 Comcast IP Phone Mosheim 10/23/2008
423-451 Bellsouth Telecomm Soddy-Daisy N/A
423-452 Bellsouth Telecomm Spring City N/A
423-453 Level 3 Communications Athens 6/18/2002
423-454 Level 3 Communications Decatur 10/26/2004
423-455 Level 3 Communications Jellico 10/7/2002
423-456 Telnyx Lafollette N/A
423-457 Cellco Partnership Cleveland 11/13/2008
423-458 New Cingular Wireless PCS Cleveland 4/2/2012
423-459 Teleport Communications America Chattanooga 1/16/2018
423-460 Bandwidth.com Clec Mountain City 9/2/2010
423-461 United Telephone-Southeast-Tn Johnson City N/A
423-462 Tellico Tel. Co. Riceville N/A
423-463 Bellsouth Telecomm Chattanooga 9/7/2006
423-464 Powertel Atlanta Licenses Cleveland 2/27/2009
423-465 New Cingular Wireless PCS Newport 7/1/2005
423-466 Powertel Nashville Licenses Athens 10/25/2017
423-467 United Telephone-Southeast-Tn Midway N/A
423-468 Onvoy Chattanooga 5/6/2006
423-469 USA Mobility Wireless Newport N/A
423-470 Cellco Partnership Greeneville 7/28/2003
423-471 New Cingular Wireless PCS Mountain City 7/28/2003
423-472 Bellsouth Telecomm Cleveland N/A
423-473 Bellsouth Telecomm Cleveland N/A
423-474 United Telephone-Southeast-Tn Stoney Creek N/A
423-475 Powertel Atlanta Licenses Chattanooga 11/6/2007
423-476 Bellsouth Telecomm Cleveland N/A
423-477 United Telephone-Southeast-Tn Midway N/A
423-478 Bellsouth Telecomm Cleveland N/A
423-479 Bellsouth Telecomm Cleveland N/A
423-480 Cellco Partnership Kingsport 2/10/2012
423-481 Bandwidth.com Clec Roan Mountain 9/1/2011
423-482 Level 3 Communications Blountville 6/7/2002
423-483 Cellco Partnership Johnson City 6/7/2002
423-484 Level 3 Communications Bristol 6/7/2002
423-485 Bellsouth Telecomm Chattanooga N/A
423-486 Cellco Partnership Chattanooga 6/9/2010
423-487 Bellsouth Telecomm Newport N/A
423-488 New Cingular Wireless PCS Chattanooga N/A
423-489 New Cingular Wireless PCS Cumberland Gap 11/2/2004
423-490 Bellsouth Telecomm Chattanooga N/A
423-491 Centurylink Communications Johnson City 6/21/2013
423-492 Bellsouth Telecomm Morristown 4/7/2011
423-493 Bellsouth Telecomm Chattanooga N/A
423-494 Cellco Partnership Lafollette 2/4/2003
423-495 Bellsouth Telecomm Chattanooga N/A
423-496 Bellsouth Telecomm Copper Basin N/A
423-497 MetroPCS Chattanooga 2/3/2017
423-498 Electric Power Board Of Chattanooga Chattanooga 2/1/2017
423-499 Bellsouth Telecomm Chattanooga N/A
423-500-XXXX --- 423-599-XXXX
NPANXX Carrier1 Area Served2 Date3
423-500 Onvoy Rogersville 3/28/2016
423-501 Skybest Communications Mountain City 10/25/2017
423-502 Cellco Partnership Midway (Sullivan) N/A
423-503 Powertel Atlanta Licenses Chattanooga N/A
423-504 Powertel Atlanta Licenses Chattanooga N/A
423-505 Powertel Atlanta Licenses Chattanooga N/A
423-506 Cellco Partnership Athens N/A
423-507 Bellsouth Telecomm Athens N/A
423-508 Teleport Communications America Chattanooga N/A
423-509 Onvoy Chattanooga 10/24/2008
423-510 Bellsouth Telecomm Chattanooga N/A
423-512 Cellco Partnership Stoney Creek 8/4/2003
423-513 Teleport Communications America Vonore 11/8/2022
423-514 USA Mobility Wireless Chattanooga N/A
423-515 Onvoy South Pittsburgh 10/1/2019
423-516 United Telephone-Southeast-Tn Sullivan Gardens 2/21/2012
423-517 Bellsouth Telecomm Chattanooga N/A
423-518 Suncom Elizabethton 5/24/2012
423-519 United States Cellular Tellico Plains N/A
423-520 Paetec Itel Madisonville N/A
423-521 Powertel Atlanta Licenses Chattanooga 6/10/2008
423-522 Bellsouth Telecomm Morristown 12/5/2002
423-523 Cellco Partnership Bulls Gap 5/9/2002
423-524 Nuso Johnson City 2/6/2018
423-525 Level 3 Communications Greeneville 5/14/2008
423-526 Brightspeed Of Eastern Tennessee New Tazewell N/A
423-527 Commio Soddy-Daisy 11/9/2022
423-528 Bandwidth.com Clec Baileyton N/A
423-529 Paetec Itel Georgetown 4/17/2006
423-530 MetroPCS Kingsport 3/15/2012
423-531 Electric Power Board Of Chattanooga Chattanooga 9/16/2008
423-532 Paetec Itel Newport N/A
423-533 Bledsoe Tel. Coop. Nine Mile N/A
423-534 Cellco Partnership Bristol N/A
423-535 MCIMetro Access Transmission Services Chattanooga 7/9/2003
423-536 Paetec Itel Sweetwater N/A
423-537 Paetec Itel Bulls Gap N/A
423-538 United Telephone-Southeast-Tn Bluff City N/A
423-539 New Cingular Wireless PCS Oneida N/A
423-540 Onvoy Newport 2/15/2018
423-541 Vonage America Chattanooga 3/20/2018
423-542 United Telephone-Southeast-Tn Elizabethton N/A
423-543 United Telephone-Southeast-Tn Elizabethton N/A
423-544 Powertel Atlanta Licenses Chattanooga 9/14/2001
423-545 Level 3 Communications Madisonville 8/20/2002
423-546 Level 3 Communications Bulls Gap 8/20/2002
423-547 United Telephone-Southeast-Tn Elizabethton N/A
423-548 Etc Communications Copper Basin 7/11/2005
423-549 Vonage America Johnson City 3/23/2018
423-550 Bandwidth.com Clec Midway 01/25/2023
423-551 Centurylink Communications Chattanooga 2/27/2014
423-552 Cellco Partnership Greeneville N/A
423-553 Bellsouth Telecomm Chattanooga N/A
423-554 Bledsoe Tel. Coop. College Station N/A
423-556 Bandwidth.com Clec Soddy-Daisy 8/30/2018
423-557 Suncom Johnson City 9/29/2004
423-558 Onvoy Chattanooga N/A
423-559 Bellsouth Telecomm Cleveland N/A
423-560 Onvoy Erwin 8/16/2018
423-561 Onvoy Sweetwater 4/18/2014
423-562 Bellsouth Telecomm Lafollette N/A
423-563 Bellsouth Telecomm Lafollette N/A
423-564 Cellco Partnership Rogersville 5/25/2018
423-565 Bandwidth.com Clec Decatur 8/30/2018
423-566 Bellsouth Telecomm Lafollette N/A
423-567 New Cingular Wireless PCS Dayton 11/26/2008
423-568 Tellico Tel. Co. Niota N/A
423-569 Highland Tel. Coop Oneida N/A
423-570 Bellsouth Telecomm Dayton N/A
423-571 Cellco Partnership Midway (Sullivan) N/A
423-572 United States Cellular Englewood N/A
423-573 Bristol Tennessee Essential Services Bristol 7/7/2006
423-574 Bristol Tennessee Essential Services Blountville 7/7/2006
423-575 Bristol Tennessee Essential Services Bluff City 7/7/2006
423-576 New Cingular Wireless PCS Elizabethton 06/15/2023
423-577 New Cingular Wireless PCS Oneida N/A
423-578 United Telephone-Southeast-Tn Kingsport N/A
423-579 Mountainet Telephone Company Kingsport 2/13/2009
423-580 New Cingular Wireless PCS Chattanooga N/A
423-581 Bellsouth Telecomm Morristown N/A
423-582 Bellsouth Telecomm Chattanooga 8/10/2009
423-583 Bandwidth.com Clec Sullivan Gardens 9/26/2018
423-584 New Cingular Wireless PCS Cleveland N/A
423-585 Bellsouth Telecomm Morristown N/A
423-586 Bellsouth Telecomm Morristown N/A
423-587 Bellsouth Telecomm Morristown N/A
423-588 Cellco Partnership Greeneville 1/7/2010
423-589 New Cingular Wireless PCS Georgetown 4/9/2019
423-590 Bandwidth.com Clec South Pittsburgh 5/3/2019
423-591 Onvoy Chattanooga 1/3/2008
423-592 United States Cellular Lafollette N/A
423-593 Powertel Atlanta Licenses Chattanooga N/A
423-594 AT&T Dayton 9/16/2009
423-595 Powertel Atlanta Licenses Chattanooga 4/12/2001
423-596 New Cingular Wireless PCS Chattanooga N/A
423-597 Bandwidth.com Clec Benton 5/22/2019
423-598 New Cingular Wireless PCS Chattanooga N/A
423-599 Cellco Partnership Cleveland 1/7/2010
423-600-XXXX --- 423-699-XXXX
NPANXX Carrier1 Area Served2 Date3
423-600 Comcast IP Phone Apison 3/19/2007
423-601 Bellsouth Telecomm Bulls Gap 2/3/2005
423-602 Nuso Chattanooga 6/8/2012
423-603 AT&T Enterprises Fork Ridge 12/13/2013
423-604 Onvoy Etowah N/A
423-605 Cellco Partnership Chattanooga N/A
423-606 Comcast IP Phone Englewood 2/26/2007
423-607 Cellco Partnership Limestone 2/17/2014
423-608 Cellco Partnership Newport N/A
423-609 Cellco Partnership Greeneville 8/12/2014
423-610 United Telephone-Southeast-Tn Johnson City N/A
423-612 Cellco Partnership Bristol N/A
423-613 Bellsouth Telecomm Newport N/A
423-614 Bellsouth Telecomm Cleveland N/A
423-615 Comcast IP Phone Collegedale 3/19/2007
423-616 Onvoy Morristown 8/18/2014
423-617 Powertel Nashville Licenses Athens 10/7/2013
423-618 Cellco Partnership Chattanooga N/A
423-619 Cellco Partnership Chattanooga N/A
423-620 Cellco Partnership Greeneville N/A
423-621 Cellco Partnership Morristown N/A
423-622 Bellsouth Telecomm Chattanooga N/A
423-623 Bellsouth Telecomm Newport N/A
423-624 Bellsouth Telecomm Chattanooga N/A
423-625 Bellsouth Telecomm Newport N/A
423-626 Brightspeed Of Eastern Tennessee New Tazewell N/A
423-627 Highland Tel. Coop Robbins N/A
423-628 Highland Tel. Coop Sunbright N/A
423-629 Bellsouth Telecomm Chattanooga N/A
423-630 Telescan Johnson City 9/25/2007
423-631 Charter IP Enabled Services Johnson City 4/8/2008
423-632 Twin Lakes Communications Wartburg 6/24/2019
423-633 Telnyx Chattanooga 12/17/2019
423-634 Bellsouth Telecomm Chattanooga N/A
423-635 New Cingular Wireless PCS Chattanooga N/A
423-636 United Telephone-Southeast-Tn Greeneville N/A
423-637 Cellco Partnership Chattanooga 6/9/2008
423-638 United Telephone-Southeast-Tn Greeneville N/A
423-639 United Telephone-Southeast-Tn Greeneville N/A
423-640 AT&T Sneedville 3/27/2020
423-641 Bandwidth.com Clec Cleveland 4/7/2014
423-642 Bellsouth Telecomm Chattanooga N/A
423-643 Electric Power Board Of Chattanooga Chattanooga 8/14/2002
423-644 New Cingular Wireless PCS Soddy-Daisy 3/9/2020
423-645 New Cingular Wireless PCS Chattanooga N/A
423-646 Suncom Bristol N/A
423-647 Suncom Butler N/A
423-648 Electric Power Board Of Chattanooga Chattanooga N/A
423-649 Bellsouth Telecomm Athens N/A
423-650 Cellco Partnership Cleveland N/A
423-651 Telnyx Jasper 5/8/2014
423-652 United Telephone-Southeast-Tn Bristol N/A
423-653 New Cingular Wireless PCS Chattanooga N/A
423-654 Csc Wireless Chattanooga 7/21/2020
423-655 USA Mobility Wireless Chattanooga N/A
423-656 Csc Wireless Johnson City 7/22/2020
423-657 Bandwidth.com Clec Mosheim 1/28/2015
423-658 Bellsouth Telecomm Whitwell N/A
423-659 Teleport Communications America Copper Basin 8/4/2020
423-660 Twilio International Chattanooga 9/16/2020
423-661 Cellco Partnership Chattanooga 8/12/2014
423-662 Onvoy Blountville N/A
423-663 Highland Tel. Coop Huntsville N/A
423-664 Centurylink Communications Chattanooga N/A
423-665 Level 3 Communications Charleston 10/26/2004
423-666 Onvoy Elizabethton 5/17/2018
423-667 Cellco Partnership Chattanooga N/A
423-668 Bellsouth Telecomm Chattanooga N/A
423-669 Onvoy Benton 08/11/2023
423-670 Ip Horizon Johnson City 9/23/2020
423-671 Ip Horizon Chattanooga 9/29/2020
423-672 Telnyx Johnson City 12/27/2019
423-673 Paetec Itel Johnson City 4/13/2021
423-674 Onvoy Dayton 4/13/2021
423-675 Onvoy Jasper 4/13/2021
423-676 Suncom Johnson City N/A
423-677 Suncom Fall Branch N/A
423-678 Onvoy Roan Mountain 4/15/2021
423-679 Onvoy Ooltewah 4/13/2021
423-680 Cellco Partnership Chattanooga 3/30/2016
423-681 Cellco Partnership Chattanooga 1/14/2015
423-682 Cellco Partnership Chattanooga 1/14/2016
423-683 Na Communications Elizabethton N/A
423-684 Na Communications Greeneville N/A
423-685 Na Communications Johnson City N/A
423-686 Onvoy Fork Ridge 4/15/2021
423-687 New Cingular Wireless PCS Pikeville 5/13/2021
423-688 Telnyx Sneedville 5/17/2021
423-689 Bandwidth.com Clec Bristol 7/1/2021
423-690 Telnyx Morristown 12/2/2016
423-691 Onvoy Athens 9/1/2021
423-692 Skybest Communications Butler 9/1/2021
423-693 Centurylink Communications Chattanooga 5/19/2006
423-694 Powertel Nashville Licenses Sweetwater 9/8/2021
423-695 Na Communications Erwin N/A
423-696 Powertel Nashville Licenses Rogersville 9/16/2021
423-697 Bellsouth Telecomm Chattanooga N/A
423-698 Bellsouth Telecomm Chattanooga N/A
423-699 Na Communications Mountain City N/A
423-701-XXXX --- 423-799-XXXX
NPANXX Carrier1 Area Served2 Date3
423-701 United States Cellular Robbins 1/30/2014
423-702 Level 3 Communications Chattanooga 2/14/2006
423-703 Onvoy Coker Creek 11/21/2019
423-704 New Cingular Wireless PCS Chattanooga N/A
423-705 Nuso Johnson City 12/2/2021
423-707 New Cingular Wireless PCS Elizabethton 12/11/2009
423-708 MetroPCS Chattanooga 10/8/2014
423-709 Paetec Itel Cleveland N/A
423-710 Comcast IP Phone Chattanooga 6/19/2007
423-712 Bandwidth.com Clec Bluff City 1/26/2015
423-713 Comcast IP Phone Chattanooga 6/5/2015
423-714 Paetec Itel Morristown N/A
423-715 Cellco Partnership Cleveland N/A
423-716 Paetec Itel Cleveland N/A
423-717 Powertel Nashville Licenses Athens 4/29/2015
423-718 Cellco Partnership Chattanooga N/A
423-719 Nuso Chattanooga 12/2/2021
423-720 Bandwidth.com Clec Newport 5/20/2015
423-721 United States Cellular Newport N/A
423-722 Level 3 Communications Johnson City N/A
423-723 Level 3 Communications Kingsport N/A
423-724 Paetec Itel Sneedville N/A
423-725 United Telephone-Southeast-Tn Hampton N/A
423-726 Cellco Partnership Midway (Sullivan) N/A
423-727 United Telephone-Southeast-Tn Mountain City N/A
423-728 Bellsouth Telecomm Cleveland N/A
423-729 Charter IP Enabled Services Fall Creek Falls 06/25/2024
423-730 Comcast IP Phone Riceville 2/26/2007
423-731 Charter IP Enabled Services New Tazewell 11/18/2025
423-732 Cellco Partnership Kingsport 8/11/2015
423-733 Bellsouth Telecomm Sneedville N/A
423-734 Onvoy Rogersville 1/9/2020
423-735 United Telephone-Southeast-Tn Erwin N/A
423-736 Cellco Partnership Morristown N/A
423-737 New Cingular Wireless PCS Johnson City N/A
423-738 New Cingular Wireless PCS Bristol 12/14/2021
423-739 Skyline Tel. Membership Corp. Shady Valley N/A
423-740 Cellco Partnership Cleveland 12/15/2021
423-741 New Cingular Wireless PCS Johnson City N/A
423-742 Cellco Partnership Bristol N/A
423-743 United Telephone-Southeast-Tn Erwin N/A
423-744 Bellsouth Telecomm Athens N/A
423-745 Bellsouth Telecomm Athens N/A
423-746 Bellsouth Telecomm Athens N/A
423-747 New Cingular Wireless PCS Johnson City N/A
423-748 New Cingular Wireless PCS Morristown N/A
423-749 MetroPCS Collegedale 12/29/2021
423-750 Skye Telecom Chattanooga 9/3/2021
423-751 Bellsouth Telecomm Chattanooga N/A
423-752 Bellsouth Telecomm Chattanooga N/A
423-753 United Telephone-Southeast-Tn Jonesboro N/A
423-754 Cellco Partnership Rogersville N/A
423-755 Bellsouth Telecomm Chattanooga N/A
423-756 Bellsouth Telecomm Chattanooga N/A
423-757 Bellsouth Telecomm Chattanooga N/A
423-758 Paetec Itel Bristol N/A
423-759 Onvoy Morristown 9/1/2021
423-760 New Cingular Wireless PCS Chattanooga N/A
423-761 Level 3 Communications Copper Basin 8/1/2006
423-762 Cellco Partnership Chattanooga N/A
423-763 Bellsouth Telecomm Chattanooga N/A
423-764 United Telephone-Southeast-Tn Bristol N/A
423-765 Charter IP Enabled Services Kingsport 12/2/2004
423-766 Onvoy Limestone 1/20/2021
423-767 New Cingular Wireless PCS Johnson City 1/9/2001
423-768 United Telephone-Southeast-Tn Butler N/A
423-769 Bandwidth.com Clec Benton 12/15/2021
423-770 Onvoy Church Hill 8/16/2018
423-771 AT&T Enterprises Chattanooga 1/6/2010
423-772 United Telephone-Southeast-Tn Roan Mountain N/A
423-773 Suncom Johnson City 2/9/2001
423-774 New Cingular Wireless PCS Soddy-Daisy N/A
423-775 Bellsouth Telecomm Dayton N/A
423-776 New Cingular Wireless PCS Pikeville 12/30/2021
423-777 Onvoy Chattanooga 10/6/2014
423-778 Bellsouth Telecomm Chattanooga N/A
423-779 Paetec Itel Chattanooga N/A
423-780 Bellsouth Telecomm Charleston N/A
423-781 AT&T Etowah 3/1/2004
423-782 Paetec Itel Kingsport N/A
423-783 United Telephone-Southeast-Tn Greeneville N/A
423-784 Bellsouth Telecomm Jellico N/A
423-785 Bellsouth Telecomm Chattanooga N/A
423-786 Onvoy Bluff City 08/11/2023
423-787 United Telephone-Southeast-Tn Greeneville N/A
423-788 United Telephone-Southeast-Tn Jonesboro N/A
423-789 United Telephone-Southeast-Tn Bristol 8/13/2002
423-790 Charter IP Enabled Services Cleveland 4/12/2006
423-791 Suncom Johnson City N/A
423-792 Dish Wireless Oakdale 02/21/2024
423-793 Level 3 Communications Bristol N/A
423-794 Paetec Itel Johnson City N/A
423-795 USA Mobility Wireless Johnson City N/A
423-796 Dish Wireless Johnson City 2/1/2022
423-797 Cellco Partnership Bristol N/A
423-798 United Telephone-Southeast-Tn Greeneville N/A
423-799 Level 3 Communications Spring City 10/26/2004
423-800-XXXX --- 423-899-XXXX
NPANXX Carrier1 Area Served2 Date3
423-800 New Cingular Wireless PCS Chattanooga 2/10/2011
423-801 United States Cellular Cumberland Gap 12/19/2007
423-802 Cellco Partnership Chattanooga N/A
423-803 Electric Power Board Of Chattanooga Chattanooga 1/4/2016
423-804 Bandwidth.com Clec Bristol 2/3/2022
423-805 Onvoy Chattanooga 6/14/2013
423-806 Bandwidth.com Clec Midway 5/20/2015
423-807 New Cingular Wireless PCS Madisonville N/A
423-808 Comcast IP Phone Tellico Plains 9/14/2007
423-809 Level 3 Communications Pikeville 05/18/2023
423-810 Teleport Communications America Charleston 8/3/2015
423-812 Bandwidth.com Clec Greeneville 8/23/2016
423-813 Cellco Partnership Cleveland 10/8/2015
423-814 Telnyx Sweetwater N/A
423-815 Comcast IP Phone Whitwell 9/14/2007
423-816 New Cingular Wireless PCS Bristol 12/1/2022
423-817 MetroPCS Kingsport N/A
423-818 Peerless Network Of Tennessee Jellico 9/21/2016
423-819 Nuso Cleveland 12/30/2022
423-820 Onvoy Greeneville 5/17/2018
423-821 Bellsouth Telecomm Chattanooga N/A
423-822 Bellsouth Telecomm Chattanooga N/A
423-823 Suncom Greeneville N/A
423-824 Onvoy Erwin 08/11/2023
423-825 Bellsouth Telecomm Chattanooga N/A
423-826 Paetec Itel Chattanooga N/A
423-827 Bellsouth Telecomm Chattanooga N/A
423-829 New Cingular Wireless PCS Charleston N/A
423-830 Onvoy Kingsport 5/17/2018
423-831 Nuso Greeneville 03/02/2023
423-832 Ton80 Communications Clinchport 1/13/2022
423-833 Suncom Johnson City N/A
423-834 Centurylink Communications Chattanooga N/A
423-835 New Cingular Wireless PCS Bristol 03/16/2023
423-836 Cellco Partnership Sweetwater N/A
423-837 Bellsouth Telecomm South Pittsburgh N/A
423-838 New Cingular Wireless PCS Chattanooga N/A
423-839 Charter IP Enabled Services Morristown N/A
423-840 Onvoy Butler 5/17/2018
423-841 Suncom Mountain City 04/06/2023
423-842 Bellsouth Telecomm Chattanooga N/A
423-843 Bellsouth Telecomm Chattanooga N/A
423-844 United Telephone-Southeast-Tn Bristol N/A
423-845 Cellco Partnership Bristol 3/30/2005
423-846 Bellsouth Telecomm Chattanooga N/A
423-847 Bellsouth Telecomm Chattanooga N/A
423-848 Skye Telecom Johnson City 9/3/2021
423-849 New Cingular Wireless PCS Johnson City 05/05/2023
423-850 Onvoy Jonesboro 5/21/2018
423-851 Brightspeed Of Eastern Tennessee New Tazewell N/A
423-852 Level 3 Communications Dunlap 05/18/2023
423-853 Twilio International Johnson City 1/21/2022
423-854 United Telephone-Southeast-Tn Johnson City N/A
423-855 Bellsouth Telecomm Chattanooga N/A
423-856 Powertel Nashville Licenses Athens 9/16/2016
423-857 United Telephone-Southeast-Tn Kingsport N/A
423-858 Onvoy Blountville 08/11/2023
423-859 Onvoy Rogersville 05/31/2023
423-860 Commio Chattanooga 7/1/2022
423-862 Onvoy Spring City 08/22/2023
423-863 Cellco Partnership Kingsport N/A
423-864 Onvoy Spectrum Decatur 05/18/2023
423-866 Comcast IP Phone Niota 08/07/2023
423-867 Bellsouth Telecomm Chattanooga N/A
423-868 Onvoy Mosheim 08/22/2023
423-869 Bellsouth Telecomm Cumberland Gap N/A
423-870 Bellsouth Telecomm Chattanooga N/A
423-871 New Cingular Wireless PCS Lafollette N/A
423-872 Terra Nova Telecom Chattanooga 05/23/2023
423-873 Fractel Stoney Creek 7/15/2020
423-874 Bellsouth Telecomm Chattanooga N/A
423-875 Bellsouth Telecomm Chattanooga N/A
423-876 Bellsouth Telecomm Chattanooga N/A
423-877 Bellsouth Telecomm Chattanooga N/A
423-878 United Telephone-Southeast-Tn Bristol N/A
423-879 Onvoy Georgetown 08/22/2023
423-880 Onvoy Johnson City 3/31/2021
423-881 Bledsoe Tel. Coop. Fall Creek Falls N/A
423-882 Bellsouth Telecomm Chattanooga 10/26/2011
423-883 Bellsouth Telecomm Chattanooga N/A
423-884 Tellico Tel. Co. Vonore N/A
423-885 Onvoy Englewood N/A
423-886 Bellsouth Telecomm Chattanooga N/A
423-887 Tellico Tel. Co. Englewood N/A
423-888 Onvoy Chattanooga 8/17/2015
423-889 Powertel Atlanta Licenses Cleveland 08/30/2023
423-890 New Cingular Wireless PCS Bristol 09/06/2023
423-892 Bellsouth Telecomm Chattanooga N/A
423-893 Bellsouth Telecomm Chattanooga N/A
423-894 Bellsouth Telecomm Chattanooga N/A
423-895 Suncom Elizabethton N/A
423-896 United Telephone-Southeast-Tn Hampton N/A
423-897 United Telephone-Southeast-Tn Fall Branch N/A
423-898 Powertel Atlanta Licenses Charleston 10/12/2023
423-899 Bellsouth Telecomm Chattanooga N/A
423-900-XXXX --- 423-999-XXXX
NPANXX Carrier1 Area Served2 Date3
423-900 Onvoy Johnson City 2/16/2011
423-902 New Cingular Wireless PCS Chattanooga N/A
423-903 New Cingular Wireless PCS Chattanooga N/A
423-904 Onvoy Spectrum Chattanooga 4/13/2021
423-905 Onvoy Spectrum Johnson City 4/13/2021
423-906 Callworks Corporation Johnson City 10/24/2023
423-907 Bellsouth Telecomm Lafollette N/A
423-908 Commio Surgoinsville 01/09/2024
423-909 Onvoy Spectrum South Pittsburgh 05/18/2023
423-910 Comcast IP Phone Ooltewah 3/19/2007
423-912 New Cingular Wireless PCS Lafollette N/A
423-913 United Telephone-Southeast-Tn Jonesboro N/A
423-914 Cellco Partnership Bristol N/A
423-915 United Telephone-Southeast-Tn Johnson City N/A
423-916 Cellco Partnership Johnson City 11/22/2024
423-917 United Telephone-Southeast-Tn Blountville N/A
423-918 New Cingular Wireless PCS Oneida 12/12/2024
423-919 Onvoy New Tazewell 10/1/2019
423-920 New Cingular Wireless PCS Athens N/A
423-921 Bellsouth Telecomm Rogersville N/A
423-922 Fractel Baileyton 7/15/2020
423-923 New Cingular Wireless PCS Rogersville N/A
423-924 Peerless Network Of Tennessee Johnson City 03/10/2025
423-925 Ton80 Communications Lafollette 3/23/2022
423-926 United Telephone-Southeast-Tn Johnson City N/A
423-927 Ton80 Communications Morristown 3/1/2022
423-928 United Telephone-Southeast-Tn Johnson City N/A
423-929 United Telephone-Southeast-Tn Johnson City N/A
423-930 Mountainet Telephone Company Johnson City 2/13/2009
423-932 Ton80 Communications Etowah 1/20/2022
423-933 Paetec Itel Chattanooga 6/14/2002
423-934 Ton80 Communications Surgoinsville 3/18/2021
423-936 Comcast IP Phone Sunbright 05/14/2024
423-938 United Telephone-Southeast-Tn Johnson City 8/13/2002
423-939 Paetec Itel Jasper 6/21/2005
423-940 Commio Dayton 03/20/2023
423-941 Comcast IP Phone Deer Lodge 05/14/2024
423-942 Bellsouth Telecomm Jasper N/A
423-943 Suncom Johnson City N/A
423-944 Scott County Tel. Coop. Clinchport N/A
423-945 Charter IP Enabled Services College Station 06/26/2025
423-946 Suncom Johnson City 3/9/2001
423-948 Suncom Limestone N/A
423-949 Bledsoe Tel. Coop. Dunlap N/A
423-951 Powertel Atlanta Licenses Charleston 06/06/2024
423-952 United Telephone-Southeast-Tn Johnson City N/A
423-953 United Telephone-Southeast-Tn Johnson City N/A
423-954 Bellsouth Telecomm Chattanooga N/A
423-955 Fractel Whitwell 7/15/2020
423-956 Cellco Partnership Bristol N/A
423-957 Suncom Hampton N/A
423-960 Peerless Network Of Tennessee Chattanooga 02/24/2025
423-961 Bellsouth Telecomm Georgetown N/A
423-963 MetroPCS Kingsport 3/9/2001
423-965 Highland Tel. Coop Deer Lodge N/A
423-966 Fractel Ball Play 7/15/2020
423-967 MetroPCS Kingsport N/A
423-968 United Telephone-Southeast-Tn Bristol N/A
423-969 Cellco Partnership Cleveland 06/30/2025
423-972 Suncom Greeneville N/A
423-973 Level 3 Communications Sneedville 4/30/2002
423-975 United Telephone-Southeast-Tn Johnson City N/A
423-977 Fractel Chattanooga 7/18/2019
423-978 Wavenation Chattanooga 07/11/2025
423-979 United Telephone-Southeast-Tn Johnson City N/A
423-980 Onvoy Chattanooga 3/31/2021
423-981 Wavenation Johnson City 07/11/2025
423-987 New Cingular Wireless PCS Chattanooga N/A
423-989 United Telephone-Southeast-Tn Bristol N/A
423-990 United Telephone-Southeast-Tn Bristol N/A
423-991 New Cingular Wireless PCS Chattanooga N/A
423-992 Terra Nova Telecom Bristol 08/13/2025
423-994 New Cingular Wireless PCS Chattanooga 5/10/2007
423-996 Powertel Atlanta Licenses Charleston 09/25/2025
423-997 Bandwidth.com Clec Elizabethton 08/07/2025
423-998 Commio Jellico 10/10/2022
423-999 Powertel Nashville Licenses Athens 3/30/2011
  1. NPA-NXX assigned carrier; with Number Pooling thousand block numbers are often assigned to other carriers as well; moreover, phone numbers can be ported between service providers
  2. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  3. Assignment date. N/A - mostly central office codes assigned before 2001.
  4. NXX prefixes last updated: November 22, 2025

Cities in area code 423

City1 County Time Zone1
Afton Greene E
Apison Hamilton E
Arthur Claiborne E
Athens McMinn E
Bakewell Hamilton E
Benton Polk E
Birchwood Hamilton E
Blountville Sullivan E
Bluff City Sullivan E
Bristol Sullivan E
Bulls Gap Hawkins E
Butler Johnson E
Bybee Cocke E
Calhoun McMinn E
Caryville Campbell E
Charleston Bradley E
Chattanooga Hamilton E
Chuckey Greene E
Church Hill Hawkins E
Clairfield Claiborne E
Cleveland Bradley E
Coalfield Morgan E
Coker Creek Monroe E
Collegedale Hamilton E
Conasauga Polk E
Copperhill Polk E
Cosby Cocke E
Cumberland Gap Claiborne E
Dayton Rhea E
Decatur Meigs E
Deer Lodge Morgan E
Del Rio Cocke E
Delano Polk E
Ducktown Polk E
Duff Campbell E
Dunlap Sequatchie C
Eagan Claiborne E
Eidson Hawkins E
Elgin Scott E
Elizabethton Carter E
Englewood McMinn E
Erwin Unicoi E
Etowah McMinn E
Evensville Rhea E
Fall Branch Washington E
Farner Polk E
Flag Pond Unicoi E
Georgetown Meigs E
Grandview Rhea E
Graysville Rhea E
Greeneville Greene E
Guild Marion C
Hampton Carter E
Harrison Hamilton E
Harrogate Claiborne E
Hartford Cocke E
Helenwood Scott E
Hixson Hamilton E
Huntsville Scott E
Jacksboro Campbell E
Jasper Marion C
Jellico Campbell E
Johnson City Washington E
Jonesborough Washington E
Kingsport Sullivan E
Kyles Ford Hancock E
LaFollette Campbell E
Lancing Morgan E
Laurel Bloomery Johnson E
Limestone Washington E
Lone Mountain Claiborne E
Lookout Mountain Hamilton E
Lowland Hamblen E
Lupton City Hamilton E
Madisonville Monroe E
Mc Donald Bradley E
Midway Greene E
Milligan College Carter E
Mohawk Greene E
Mooresburg Hawkins E
Morristown Hamblen E
Mosheim Greene E
Mount Carmel Hawkins E
Mountain City Johnson E
Mountain Home Washington E
New Tazewell Claiborne E
Newcomb Campbell E
Newport Cocke E
Niota McMinn E
Oakdale Morgan E
Ocoee Polk E
Old Fort Polk E
Oliver Springs Roane E
Oneida Scott E
Ooltewah Hamilton E
Parrottsville Cocke E
Petros Morgan E
Pikeville Bledsoe C
Piney Flats Sullivan E
Pioneer Campbell E
Pruden Claiborne E
Reliance Polk E
Riceville McMinn E
Roan Mountain Carter E
Robbins Scott E
Rogersville Hawkins E
Rugby Morgan E
Russellville Hamblen E
Sale Creek Hamilton E
Sequatchie Marion C
Shady Valley Johnson E
Shawanee Claiborne E
Signal Mountain Hamilton E
Sneedville Hancock E
Soddy-Daisy Hamilton E
South Pittsburg Marion C
Speedwell Claiborne E
Spring City Rhea E
Sunbright Morgan E
Surgoinsville Hawkins E
Sweetwater Monroe E
Talbott Hamblen E
Tazewell Claiborne E
Telford Washington E
Tellico Plains Monroe E
Ten Mile Meigs E
Trade Johnson E
Turtletown Polk E
Unicoi Unicoi E
Vonore Monroe E
Wartburg Morgan E
Watauga Carter E
Whitesburg Hamblen E
Whiteside Marion C
Whitwell Marion C
Winfield Scott E
  1. Listed above are most places served by USA area code 423. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. Multiple time zones. Go to top for current time.
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Tag » Where Is The 423 Area Code