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

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Area Code 423

Area code 423 is in Tennessee, USA , spanning 25 counties and serving 136 cities , including Chattanooga, Johnson City or Kingsport; it currently uses 758 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 Area served[1] Provider[2] Date[3]
423-200 Morristown Multiple 7/18/2002
423-201 Lafollette Multiple 7/18/2002
423-202 Johnson City Multiple 12/16/2003
423-203 Chattanooga Multiple 2/3/2022
423-205 Etowah Multiple 3/9/2016
423-206 Chattanooga Multiple 11/30/2018
423-207 Midway Multiple N/A
423-208 Chattanooga Multiple 11/1/2006
423-209 Chattanooga Multiple N/A
423-210 Tellico Plains Multiple N/A
423-212 Blountville Multiple 7/18/2002
423-213 Elizabethton Multiple 11/7/2001
423-214 Englewood Multiple N/A
423-215 Oneida Cellco Partnership 12/3/2004
423-216 Benton Multiple 4/28/2005
423-217 Bristol Multiple 7/18/2002
423-218 Johnson City Multiple 7/18/2002
423-219 Charleston Multiple 10/1/2019
423-220 Erwin Multiple 4/4/2001
423-221 Chattanooga USA Mobility Wireless N/A
423-222 Morristown New Cingular Wireless PCS N/A
423-223 Oneida Multiple 11/30/2006
423-224 Kingsport United Telephone-Southeast-Tn N/A
423-225 Benton Multiple N/A
423-226 Church Hill Multiple 5/28/2010
423-227 Chattanooga Powertel Atlanta Licenses N/A
423-228 South Pittsburgh Multiple N/A
423-229 Kingsport United Telephone-Southeast-Tn N/A
423-230 Kingsport United Telephone-Southeast-Tn N/A
423-231 Morristown New Cingular Wireless PCS N/A
423-232 Johnson City United Telephone-Southeast-Tn N/A
423-233 Johnson City Pro Page Partners N/A
423-234 Baileyton United Telephone-Southeast-Tn N/A
423-235 Bulls Gap Multiple N/A
423-236 Apison Multiple N/A
423-237 Newport Multiple N/A
423-238 Ooltewah Brightspeed Of Southern Tennessee N/A
423-239 Midway (Sullivan) United Telephone-Southeast-Tn N/A
423-240 Chattanooga Cellco Partnership N/A
423-241 Copper Basin Multiple 4/11/2003
423-242 Chattanooga Multiple N/A
423-243 Soddy-Daisy Multiple N/A
423-244 Cleveland Multiple N/A
423-245 Kingsport United Telephone-Southeast-Tn N/A
423-246 Kingsport United Telephone-Southeast-Tn N/A
423-247 Kingsport United Telephone-Southeast-Tn N/A
423-248 Newport Multiple N/A
423-249 Fork Ridge Multiple N/A
423-250 Cleveland Multiple 4/27/2017
423-251 Kingsport Multiple 1/5/2017
423-252 Athens Multiple N/A
423-253 Tellico Plains Multiple N/A
423-254 Morristown Multiple N/A
423-255 Chattanooga Multiple N/A
423-256 Church Hill Multiple N/A
423-257 Limestone United Telephone-Southeast-Tn N/A
423-258 Morristown Multiple N/A
423-259 New Tazewell Multiple 4/27/2004
423-260 Chattanooga Cellco Partnership 8/20/2007
423-261 Coker Creek Multiple N/A
423-262 Johnson City Multiple N/A
423-263 Etowah Bellsouth Telecomm N/A
423-264 Vonore Multiple 7/21/2011
423-265 Chattanooga Bellsouth Telecomm N/A
423-266 Chattanooga Bellsouth Telecomm N/A
423-267 Chattanooga Bellsouth Telecomm N/A
423-268 Johnson City Multiple 6/8/2012
423-269 Chattanooga Multiple 1/20/2017
423-270 Erwin Multiple 4/24/2013
423-271 Sweetwater Multiple 4/14/2011
423-272 Rogersville Bellsouth Telecomm N/A
423-273 Morristown Multiple N/A
423-274 Bristol Multiple N/A
423-275 Chattanooga Multiple 6/30/2022
423-276 Kingsport New Cingular Wireless PCS N/A
423-277 Morristown Multiple 8/29/2001
423-278 Greeneville Multiple N/A
423-279 Blountville Multiple N/A
423-280 Chattanooga Cellco Partnership N/A
423-281 Butler Multiple 11/1/2011
423-282 Johnson City United Telephone-Southeast-Tn N/A
423-283 Johnson City United Telephone-Southeast-Tn N/A
423-284 Cleveland New Cingular Wireless PCS N/A
423-285 Dayton Multiple N/A
423-286 Oneida Highland Tel. Coop N/A
423-287 Chattanooga Multiple N/A
423-288 Kingsport United Telephone-Southeast-Tn N/A
423-289 Morristown Multiple 6/18/2001
423-290 Chattanooga Cellco Partnership N/A
423-291 Mountain City Multiple 8/31/2001
423-292 Fall Branch Suncom N/A
423-293 Rogersville Multiple 8/31/2001
423-294 Chattanooga Level 3 Communications 4/3/2001
423-295 Ball Play Multiple N/A
423-296 Chattanooga Bellsouth Telecomm N/A
423-297 Elizabethton Multiple N/A
423-298 Chattanooga Multiple N/A
423-299 Benton Multiple 11/2/2003
423-300-XXXX --- 423-399-XXXX
NPANXX Area served[1] Provider[2] Date[3]
423-300 Sneedville Multiple 4/29/2003
423-301 South Pittsburgh Multiple 11/28/2011
423-302 Johnson City Multiple 11/10/2008
423-303 Cleveland Multiple N/A
423-304 Chattanooga New Cingular Wireless PCS N/A
423-305 Chattanooga Multiple 2/23/2007
423-306 Midway (Sullivan) Cellco Partnership N/A
423-307 Morristown Multiple 10/24/2005
423-308 Chattanooga Multiple N/A
423-309 Chattanooga Cellco Partnership N/A
423-310 Cleveland New Cingular Wireless PCS 10/11/2002
423-312 Morristown Cellco Partnership N/A
423-313 Chattanooga Powertel Atlanta Licenses 5/9/2001
423-314 Chattanooga Powertel Atlanta Licenses N/A
423-315 Chattanooga Multiple N/A
423-316 Chattanooga Powertel Atlanta Licenses N/A
423-317 Morristown Bellsouth Telecomm N/A
423-318 Morristown Bellsouth Telecomm N/A
423-319 Huntsville Multiple N/A
423-320 Chattanooga New Cingular Wireless PCS N/A
423-321 Chattanooga Multiple N/A
423-322 Chattanooga Cellco Partnership N/A
423-323 Blountville United Telephone-Southeast-Tn N/A
423-324 Petros Highland Tel. Coop N/A
423-325 Blountville Multiple N/A
423-326 Chattanooga Multiple N/A
423-327 Bulls Gap Multiple N/A
423-328 Johnson City Multiple 2/19/2008
423-329 Greeneville New Cingular Wireless PCS 3/6/2002
423-330 Erwin Multiple 3/6/2002
423-331 Cleveland Multiple N/A
423-332 Soddy-Daisy Bellsouth Telecomm N/A
423-333 Athens Multiple N/A
423-334 Decatur Bellsouth Telecomm N/A
423-335 Midway (Sullivan) Cellco Partnership N/A
423-336 Charleston Bellsouth Telecomm N/A
423-337 Sweetwater Multiple N/A
423-338 Benton Bellsouth Telecomm N/A
423-339 Cleveland Multiple N/A
423-340 Bristol Multiple N/A
423-341 Bristol Cellco Partnership N/A
423-342 Elizabethton Multiple 3/6/2002
423-343 Kingsport Multiple N/A
423-344 Chattanooga Bellsouth Telecomm N/A
423-345 Surgoinsville Multiple N/A
423-346 Wartburg Highland Tel. Coop N/A
423-347 Rogersville Multiple N/A
423-348 Fall Branch United Telephone-Southeast-Tn N/A
423-349 Sullivan Gardens Multiple N/A
423-350 Bristol Multiple 7/1/2022
423-351 Sweetwater Multiple N/A
423-352 Lafollette Multiple N/A
423-353 Morristown Multiple 3/16/2011
423-354 Blountville Multiple N/A
423-355 Chattanooga Multiple N/A
423-356 Chattanooga Multiple 2/28/2001
423-357 Church Hill United Telephone-Southeast-Tn N/A
423-358 Rogersville Multiple 3/7/2002
423-359 Greeneville United Telephone-Southeast-Tn 8/13/2002
423-360 Midway (Sullivan) Cellco Partnership N/A
423-361 Midway (Sullivan) Cellco Partnership N/A
423-362 Chattanooga Multiple N/A
423-363 Huntsville Multiple 2/22/2001
423-364 Chattanooga New Cingular Wireless PCS N/A
423-365 Spring City Bellsouth Telecomm N/A
423-366 Bristol New Cingular Wireless PCS N/A
423-367 Kingsport New Cingular Wireless PCS N/A
423-368 Athens Cellco Partnership N/A
423-369 Oakdale Highland Tel. Coop N/A
423-370 Athens Multiple N/A
423-371 Sweetwater Multiple N/A
423-372 Jellico Multiple N/A
423-373 Bulls Gap Multiple N/A
423-374 Lafollette Multiple N/A
423-375 Benton Multiple 3/18/2010
423-376 Madisonville Multiple N/A
423-377 Lafollette Multiple N/A
423-378 Kingsport United Telephone-Southeast-Tn N/A
423-379 Newport Multiple N/A
423-380 Cleveland Multiple N/A
423-381 Athens Multiple N/A
423-382 Sneedville Multiple N/A
423-383 Bristol Suncom 11/14/2001
423-384 Fall Branch Suncom 11/14/2001
423-385 Chattanooga Multiple N/A
423-386 Chattanooga Multiple N/A
423-387 Johnson City Multiple 10/11/2022
423-388 Erwin Multiple 3/22/2002
423-389 Midway (Sullivan) Multiple 5/9/2002
423-390 Kingsport Multiple 8/13/2002
423-391 Bluff City Multiple N/A
423-392 Kingsport United Telephone-Southeast-Tn N/A
423-393 Bulls Gap Multiple N/A
423-394 Chattanooga Multiple N/A
423-395 Athens Multiple 11/4/2022
423-396 Collegedale Multiple N/A
423-397 Benton Multiple 7/6/2017
423-398 Kingsport Multiple 3/1/2011
423-399 Sullivan Gardens Bandwidth.com Clec 02/10/2026
423-400-XXXX --- 423-499-XXXX
NPANXX Area served[1] Provider[2] Date[3]
423-400 Chattanooga Powertel Atlanta Licenses N/A
423-401 Soddy-Daisy Multiple N/A
423-402 Chattanooga Multiple 6/20/2008
423-403 South Pittsburgh Multiple 5/1/2017
423-404 Madisonville Multiple N/A
423-405 Athens Multiple 3/29/2011
423-406 Midway (Sullivan) Multiple 3/13/2008
423-407 Spring City Multiple 1/10/2020
423-408 Kingsport Multiple 10/29/2009
423-409 Bulls Gap USA Mobility Wireless N/A
423-410 Johnson City United Telephone-Southeast-Tn N/A
423-412 Johnson City USA Mobility Wireless N/A
423-413 Chattanooga Cellco Partnership N/A
423-414 Chattanooga Multiple 4/1/2010
423-415 Newport Multiple 3/11/2010
423-416 Midway (Sullivan) Cellco Partnership N/A
423-417 Chattanooga Multiple 8/23/2017
423-418 Midway (Sullivan) Multiple N/A
423-419 Cumberland Gap Multiple 2/21/2012
423-420 Madisonville Multiple N/A
423-421 Chattanooga Multiple N/A
423-422 Mosheim Multiple N/A
423-423 Limestone Multiple 10/16/2025
423-424 Chattanooga Multiple N/A
423-425 Chattanooga Multiple 12/11/2001
423-426 Limestone Multiple 3/5/2002
423-427 Johnson City Multiple 3/5/2018
423-428 Dayton Multiple 4/22/2002
423-429 Kingsport Multiple 1/21/2008
423-430 Johnson City Multiple 3/11/2013
423-431 Johnson City Multiple N/A
423-432 Chattanooga Powertel Atlanta Licenses N/A
423-433 Johnson City Multiple N/A
423-434 Johnson City United Telephone-Southeast-Tn N/A
423-435 Athens Multiple 5/2/2002
423-436 Madisonville Multiple 5/2/2002
423-437 Lafollette Multiple 5/2/2002
423-438 Morristown Multiple 5/2/2002
423-439 Johnson City Multiple N/A
423-440 Elizabethton Multiple 10/14/2009
423-441 Cumberland Gap Multiple 1/7/2003
423-442 Madisonville Bellsouth Telecomm N/A
423-443 Chattanooga Multiple 5/7/2002
423-444 Limestone Multiple 1/8/2010
423-445 Surgoinsville Multiple 6/25/2002
423-446 Fall Branch Multiple 7/6/2002
423-447 Pikeville Bledsoe Tel. Coop. N/A
423-448 Pikeville New Cingular Wireless PCS 9/23/2009
423-449 Lafollette Multiple 6/13/2002
423-450 Mosheim Comcast IP Phone 10/23/2008
423-451 Soddy-Daisy Multiple N/A
423-452 Spring City Bellsouth Telecomm N/A
423-453 Athens Multiple 6/18/2002
423-454 Decatur Multiple 10/26/2004
423-455 Jellico Multiple 10/7/2002
423-456 Lafollette Multiple N/A
423-457 Cleveland Multiple 11/13/2008
423-458 Cleveland Multiple 4/2/2012
423-459 Chattanooga Multiple 1/16/2018
423-460 Mountain City Multiple 9/2/2010
423-461 Johnson City Multiple N/A
423-462 Riceville Multiple N/A
423-463 Chattanooga Multiple 9/7/2006
423-464 Cleveland Multiple 2/27/2009
423-465 Newport Multiple 7/1/2005
423-466 Athens Multiple 10/25/2017
423-467 Midway Multiple N/A
423-468 Chattanooga Multiple 5/6/2006
423-469 Newport USA Mobility Wireless N/A
423-470 Greeneville Cellco Partnership 7/28/2003
423-471 Mountain City Multiple 7/28/2003
423-472 Cleveland Bellsouth Telecomm N/A
423-473 Cleveland Multiple N/A
423-474 Stoney Creek United Telephone-Southeast-Tn N/A
423-475 Chattanooga Multiple 11/6/2007
423-476 Cleveland Bellsouth Telecomm N/A
423-477 Midway United Telephone-Southeast-Tn N/A
423-478 Cleveland Bellsouth Telecomm N/A
423-479 Cleveland Bellsouth Telecomm N/A
423-480 Kingsport Cellco Partnership 2/10/2012
423-481 Roan Mountain Multiple 9/1/2011
423-482 Blountville Multiple 6/7/2002
423-483 Johnson City Cellco Partnership 6/7/2002
423-484 Bristol Multiple 6/7/2002
423-485 Chattanooga Multiple N/A
423-486 Chattanooga Multiple 6/9/2010
423-487 Newport Multiple N/A
423-488 Chattanooga New Cingular Wireless PCS N/A
423-489 Cumberland Gap New Cingular Wireless PCS 11/2/2004
423-490 Chattanooga Multiple N/A
423-491 Johnson City Multiple 6/21/2013
423-492 Morristown Multiple 4/7/2011
423-493 Chattanooga Multiple N/A
423-494 Lafollette Cellco Partnership 2/4/2003
423-495 Chattanooga Bellsouth Telecomm N/A
423-496 Copper Basin Bellsouth Telecomm N/A
423-497 Chattanooga Multiple 2/3/2017
423-498 Chattanooga Multiple 2/1/2017
423-499 Chattanooga Bellsouth Telecomm N/A
423-500-XXXX --- 423-599-XXXX
NPANXX Area served[1] Provider[2] Date[3]
423-500 Rogersville Multiple 3/28/2016
423-501 Mountain City Multiple 10/25/2017
423-502 Midway (Sullivan) Cellco Partnership N/A
423-503 Chattanooga Powertel Atlanta Licenses N/A
423-504 Chattanooga Powertel Atlanta Licenses N/A
423-505 Chattanooga Powertel Atlanta Licenses N/A
423-506 Athens Cellco Partnership N/A
423-507 Athens Multiple N/A
423-508 Chattanooga Multiple N/A
423-509 Chattanooga Multiple 10/24/2008
423-510 Chattanooga Bellsouth Telecomm N/A
423-512 Stoney Creek Multiple 8/4/2003
423-513 Vonore Multiple 11/8/2022
423-514 Chattanooga USA Mobility Wireless N/A
423-515 South Pittsburgh Multiple 10/1/2019
423-516 Sullivan Gardens Multiple 2/21/2012
423-517 Chattanooga Bellsouth Telecomm N/A
423-518 Elizabethton Multiple 5/24/2012
423-519 Tellico Plains United States Cellular N/A
423-520 Madisonville Multiple N/A
423-521 Chattanooga Multiple 6/10/2008
423-522 Morristown Multiple 12/5/2002
423-523 Bulls Gap Multiple 5/9/2002
423-524 Johnson City Multiple 2/6/2018
423-525 Greeneville Multiple 5/14/2008
423-526 New Tazewell Multiple N/A
423-527 Soddy-Daisy Multiple 11/9/2022
423-528 Baileyton Multiple N/A
423-529 Georgetown Multiple 4/17/2006
423-530 Kingsport Multiple 3/15/2012
423-531 Chattanooga Multiple 9/16/2008
423-532 Newport Multiple N/A
423-533 Nine Mile Bledsoe Tel. Coop. N/A
423-534 Bristol Cellco Partnership N/A
423-535 Chattanooga Multiple 7/9/2003
423-536 Sweetwater Multiple N/A
423-537 Bulls Gap Multiple N/A
423-538 Bluff City United Telephone-Southeast-Tn N/A
423-539 Oneida Multiple N/A
423-540 Newport Multiple 2/15/2018
423-541 Chattanooga Multiple 3/20/2018
423-542 Elizabethton United Telephone-Southeast-Tn N/A
423-543 Elizabethton United Telephone-Southeast-Tn N/A
423-544 Chattanooga Powertel Atlanta Licenses 9/14/2001
423-545 Madisonville Multiple 8/20/2002
423-546 Bulls Gap Multiple 8/20/2002
423-547 Elizabethton United Telephone-Southeast-Tn N/A
423-548 Copper Basin Etc Communications 7/11/2005
423-549 Johnson City Multiple 3/23/2018
423-550 Midway Multiple 01/25/2023
423-551 Chattanooga Multiple 2/27/2014
423-552 Greeneville Multiple N/A
423-553 Chattanooga Bellsouth Telecomm N/A
423-554 College Station Bledsoe Tel. Coop. N/A
423-556 Soddy-Daisy Multiple 8/30/2018
423-557 Johnson City Multiple 9/29/2004
423-558 Chattanooga Multiple N/A
423-559 Cleveland Bellsouth Telecomm N/A
423-560 Erwin Multiple 8/16/2018
423-561 Sweetwater Multiple 4/18/2014
423-562 Lafollette Bellsouth Telecomm N/A
423-563 Lafollette Multiple N/A
423-564 Rogersville Multiple 5/25/2018
423-565 Decatur Multiple 8/30/2018
423-566 Lafollette Bellsouth Telecomm N/A
423-567 Dayton Multiple 11/26/2008
423-568 Niota Multiple N/A
423-569 Oneida Highland Tel. Coop N/A
423-570 Dayton Bellsouth Telecomm N/A
423-571 Midway (Sullivan) Cellco Partnership N/A
423-572 Englewood Multiple N/A
423-573 Bristol Bristol Tennessee Essential Services 7/7/2006
423-574 Blountville Bristol Tennessee Essential Services 7/7/2006
423-575 Bluff City Bristol Tennessee Essential Services 7/7/2006
423-576 Elizabethton Multiple 06/15/2023
423-577 Oneida Multiple N/A
423-578 Kingsport Multiple N/A
423-579 Kingsport Multiple 2/13/2009
423-580 Chattanooga New Cingular Wireless PCS N/A
423-581 Morristown Bellsouth Telecomm N/A
423-582 Chattanooga Multiple 8/10/2009
423-583 Sullivan Gardens Multiple 9/26/2018
423-584 Cleveland Multiple N/A
423-585 Morristown Multiple N/A
423-586 Morristown Bellsouth Telecomm N/A
423-587 Morristown Bellsouth Telecomm N/A
423-588 Greeneville Multiple 1/7/2010
423-589 Georgetown Multiple 4/9/2019
423-590 South Pittsburgh Bandwidth.com Clec 5/3/2019
423-591 Chattanooga Multiple 1/3/2008
423-592 Lafollette Multiple N/A
423-593 Chattanooga Powertel Atlanta Licenses N/A
423-594 Dayton Multiple 9/16/2009
423-595 Chattanooga Powertel Atlanta Licenses 4/12/2001
423-596 Chattanooga New Cingular Wireless PCS N/A
423-597 Benton Multiple 5/22/2019
423-598 Chattanooga Multiple N/A
423-599 Cleveland Multiple 1/7/2010
423-600-XXXX --- 423-698-XXXX
NPANXX Area served[1] Provider[2] Date[3]
423-600 Apison Multiple 3/19/2007
423-601 Bulls Gap Multiple 2/3/2005
423-602 Chattanooga Multiple 6/8/2012
423-603 Fork Ridge Multiple 12/13/2013
423-604 Etowah Multiple N/A
423-605 Chattanooga Cellco Partnership N/A
423-606 Englewood Multiple 2/26/2007
423-607 Limestone Multiple 2/17/2014
423-608 Newport Cellco Partnership N/A
423-609 Greeneville Multiple 8/12/2014
423-610 Johnson City United Telephone-Southeast-Tn N/A
423-612 Bristol Cellco Partnership N/A
423-613 Newport Multiple N/A
423-614 Cleveland Bellsouth Telecomm N/A
423-615 Collegedale Multiple 3/19/2007
423-616 Morristown Multiple 8/18/2014
423-617 Athens Multiple 10/7/2013
423-618 Chattanooga Cellco Partnership N/A
423-619 Chattanooga Cellco Partnership N/A
423-620 Greeneville Multiple N/A
423-621 Morristown Multiple N/A
423-622 Chattanooga Bellsouth Telecomm N/A
423-623 Newport Bellsouth Telecomm N/A
423-624 Chattanooga Bellsouth Telecomm N/A
423-625 Newport Bellsouth Telecomm N/A
423-626 New Tazewell Brightspeed Of Eastern Tennessee N/A
423-627 Robbins Multiple N/A
423-628 Sunbright Highland Tel. Coop N/A
423-629 Chattanooga Bellsouth Telecomm N/A
423-630 Johnson City Telescan 9/25/2007
423-631 Johnson City Multiple 4/8/2008
423-632 Wartburg Multiple 6/24/2019
423-633 Chattanooga Multiple 12/17/2019
423-634 Chattanooga Bellsouth Telecomm N/A
423-635 Chattanooga Multiple N/A
423-636 Greeneville United Telephone-Southeast-Tn N/A
423-637 Chattanooga Cellco Partnership 6/9/2008
423-638 Greeneville United Telephone-Southeast-Tn N/A
423-639 Greeneville United Telephone-Southeast-Tn N/A
423-640 Sneedville Multiple 3/27/2020
423-641 Cleveland Multiple 4/7/2014
423-642 Chattanooga Bellsouth Telecomm N/A
423-643 Chattanooga Electric Power Board Of Chattanooga 8/14/2002
423-644 Soddy-Daisy Multiple 3/9/2020
423-645 Chattanooga New Cingular Wireless PCS N/A
423-646 Bristol Suncom N/A
423-647 Butler Suncom N/A
423-648 Chattanooga Electric Power Board Of Chattanooga N/A
423-649 Athens Multiple N/A
423-650 Cleveland Multiple N/A
423-651 Jasper Multiple 5/8/2014
423-652 Bristol Multiple N/A
423-653 Chattanooga New Cingular Wireless PCS N/A
423-654 Chattanooga Multiple 7/21/2020
423-655 Chattanooga USA Mobility Wireless N/A
423-656 Johnson City Multiple 7/22/2020
423-657 Mosheim Multiple 1/28/2015
423-658 Whitwell Multiple N/A
423-659 Copper Basin Multiple 8/4/2020
423-660 Chattanooga Multiple 9/16/2020
423-661 Chattanooga Multiple 8/12/2014
423-662 Blountville Multiple N/A
423-663 Huntsville Multiple N/A
423-664 Chattanooga Multiple N/A
423-665 Charleston Multiple 10/26/2004
423-666 Elizabethton Multiple 5/17/2018
423-667 Chattanooga Cellco Partnership N/A
423-668 Chattanooga Multiple N/A
423-669 Benton Multiple 08/11/2023
423-670 Johnson City Multiple 9/23/2020
423-671 Chattanooga Multiple 9/29/2020
423-672 Johnson City Multiple 12/27/2019
423-673 Johnson City Multiple 4/13/2021
423-674 Dayton Multiple 4/13/2021
423-675 Jasper Multiple 4/13/2021
423-676 Johnson City Suncom N/A
423-677 Fall Branch Suncom N/A
423-678 Roan Mountain Multiple 4/15/2021
423-679 Ooltewah Multiple 4/13/2021
423-680 Chattanooga Multiple 3/30/2016
423-681 Chattanooga Multiple 1/14/2015
423-682 Chattanooga Multiple 1/14/2016
423-686 Fork Ridge Onvoy 4/15/2021
423-687 Pikeville New Cingular Wireless PCS 5/13/2021
423-688 Sneedville Multiple 5/17/2021
423-689 Bristol Multiple 7/1/2021
423-690 Morristown Multiple 12/2/2016
423-691 Athens Multiple 9/1/2021
423-692 Butler Multiple 9/1/2021
423-693 Chattanooga Multiple 5/19/2006
423-694 Sweetwater Multiple 9/8/2021
423-696 Rogersville Multiple 9/16/2021
423-697 Chattanooga Bellsouth Telecomm N/A
423-698 Chattanooga Bellsouth Telecomm N/A
423-701-XXXX --- 423-799-XXXX
NPANXX Area served[1] Provider[2] Date[3]
423-701 Robbins Multiple 1/30/2014
423-702 Chattanooga Multiple 2/14/2006
423-703 Coker Creek Onvoy 11/21/2019
423-704 Chattanooga Multiple N/A
423-705 Johnson City Multiple 12/2/2021
423-707 Elizabethton Multiple 12/11/2009
423-708 Chattanooga Multiple 10/8/2014
423-709 Cleveland Multiple N/A
423-710 Chattanooga Multiple 6/19/2007
423-712 Bluff City Multiple 1/26/2015
423-713 Chattanooga Multiple 6/5/2015
423-714 Morristown Multiple N/A
423-715 Cleveland Cellco Partnership N/A
423-716 Cleveland Multiple N/A
423-717 Athens Multiple 4/29/2015
423-718 Chattanooga Cellco Partnership N/A
423-719 Chattanooga Multiple 12/2/2021
423-720 Newport Multiple 5/20/2015
423-721 Newport Multiple N/A
423-722 Johnson City Multiple N/A
423-723 Kingsport Multiple N/A
423-724 Sneedville Multiple N/A
423-725 Hampton United Telephone-Southeast-Tn N/A
423-726 Midway (Sullivan) Multiple N/A
423-727 Mountain City United Telephone-Southeast-Tn N/A
423-728 Cleveland Multiple N/A
423-729 Fall Creek Falls Charter IP Enabled Services 06/25/2024
423-730 Riceville Multiple 2/26/2007
423-731 New Tazewell Charter IP Enabled Services 11/18/2025
423-732 Kingsport Multiple 8/11/2015
423-733 Sneedville Multiple N/A
423-734 Rogersville Multiple 1/9/2020
423-735 Erwin Multiple N/A
423-736 Morristown Cellco Partnership N/A
423-737 Johnson City New Cingular Wireless PCS N/A
423-738 Bristol New Cingular Wireless PCS 12/14/2021
423-739 Shady Valley Skyline Tel. Membership Corp. N/A
423-740 Cleveland Multiple 12/15/2021
423-741 Johnson City New Cingular Wireless PCS N/A
423-742 Bristol Multiple N/A
423-743 Erwin United Telephone-Southeast-Tn N/A
423-744 Athens Multiple N/A
423-745 Athens Bellsouth Telecomm N/A
423-746 Athens Bellsouth Telecomm N/A
423-747 Johnson City New Cingular Wireless PCS N/A
423-748 Morristown New Cingular Wireless PCS N/A
423-749 Collegedale Multiple 12/29/2021
423-750 Chattanooga Multiple 9/3/2021
423-751 Chattanooga Bellsouth Telecomm N/A
423-752 Chattanooga Bellsouth Telecomm N/A
423-753 Jonesboro United Telephone-Southeast-Tn N/A
423-754 Rogersville Cellco Partnership N/A
423-755 Chattanooga Multiple N/A
423-756 Chattanooga Bellsouth Telecomm N/A
423-757 Chattanooga Bellsouth Telecomm N/A
423-758 Bristol Multiple N/A
423-759 Morristown Multiple 9/1/2021
423-760 Chattanooga Multiple N/A
423-761 Copper Basin Multiple 8/1/2006
423-762 Chattanooga Cellco Partnership N/A
423-763 Chattanooga Multiple N/A
423-764 Bristol United Telephone-Southeast-Tn N/A
423-765 Kingsport Multiple 12/2/2004
423-766 Limestone Multiple 1/20/2021
423-767 Johnson City Multiple 1/9/2001
423-768 Butler United Telephone-Southeast-Tn N/A
423-769 Benton Multiple 12/15/2021
423-770 Church Hill Multiple 8/16/2018
423-771 Chattanooga Multiple 1/6/2010
423-772 Roan Mountain United Telephone-Southeast-Tn N/A
423-773 Johnson City Suncom 2/9/2001
423-774 Soddy-Daisy New Cingular Wireless PCS N/A
423-775 Dayton Bellsouth Telecomm N/A
423-776 Pikeville New Cingular Wireless PCS 12/30/2021
423-777 Chattanooga Multiple 10/6/2014
423-778 Chattanooga Bellsouth Telecomm N/A
423-779 Chattanooga Multiple N/A
423-780 Charleston Multiple N/A
423-781 Etowah Multiple 3/1/2004
423-782 Kingsport Multiple N/A
423-783 Greeneville United Telephone-Southeast-Tn N/A
423-784 Jellico Bellsouth Telecomm N/A
423-785 Chattanooga Multiple N/A
423-786 Bluff City Multiple 08/11/2023
423-787 Greeneville United Telephone-Southeast-Tn N/A
423-788 Jonesboro Multiple N/A
423-789 Bristol United Telephone-Southeast-Tn 8/13/2002
423-790 Cleveland Multiple 4/12/2006
423-791 Johnson City Multiple N/A
423-792 Oakdale Multiple 02/21/2024
423-793 Bristol Multiple N/A
423-794 Johnson City Multiple N/A
423-795 Johnson City USA Mobility Wireless N/A
423-796 Johnson City Multiple 2/1/2022
423-797 Bristol Multiple N/A
423-798 Greeneville United Telephone-Southeast-Tn N/A
423-799 Spring City Multiple 10/26/2004
423-800-XXXX --- 423-899-XXXX
NPANXX Area served[1] Provider[2] Date[3]
423-800 Chattanooga Multiple 2/10/2011
423-801 Cumberland Gap Multiple 12/19/2007
423-802 Chattanooga Cellco Partnership N/A
423-803 Chattanooga Multiple 1/4/2016
423-804 Bristol Multiple 2/3/2022
423-805 Chattanooga Multiple 6/14/2013
423-806 Midway Multiple 5/20/2015
423-807 Madisonville New Cingular Wireless PCS N/A
423-808 Tellico Plains Multiple 9/14/2007
423-809 Pikeville Multiple 05/18/2023
423-810 Charleston Multiple 8/3/2015
423-812 Greeneville Multiple 8/23/2016
423-813 Cleveland Multiple 10/8/2015
423-814 Sweetwater Multiple N/A
423-815 Whitwell Multiple 9/14/2007
423-816 Bristol New Cingular Wireless PCS 12/1/2022
423-817 Kingsport Multiple N/A
423-818 Jellico Multiple 9/21/2016
423-819 Cleveland Multiple 12/30/2022
423-820 Greeneville Multiple 5/17/2018
423-821 Chattanooga Bellsouth Telecomm N/A
423-822 Chattanooga Multiple N/A
423-823 Greeneville Multiple N/A
423-824 Erwin Onvoy 08/11/2023
423-825 Chattanooga Multiple N/A
423-826 Chattanooga Multiple N/A
423-827 Chattanooga Multiple N/A
423-829 Charleston Multiple N/A
423-830 Kingsport Multiple 5/17/2018
423-831 Greeneville Multiple 03/02/2023
423-832 Clinchport Ton80 Communications 1/13/2022
423-833 Johnson City Multiple N/A
423-834 Chattanooga Multiple N/A
423-835 Bristol Multiple 03/16/2023
423-836 Sweetwater Multiple N/A
423-837 South Pittsburgh Bellsouth Telecomm N/A
423-838 Chattanooga Multiple N/A
423-839 Morristown Multiple N/A
423-840 Butler Multiple 5/17/2018
423-841 Mountain City Multiple 04/06/2023
423-842 Chattanooga Bellsouth Telecomm N/A
423-843 Chattanooga Bellsouth Telecomm N/A
423-844 Bristol Multiple N/A
423-845 Bristol Multiple 3/30/2005
423-846 Chattanooga Bellsouth Telecomm N/A
423-847 Chattanooga Multiple N/A
423-848 Johnson City Multiple 9/3/2021
423-849 Johnson City Multiple 05/05/2023
423-850 Jonesboro Multiple 5/21/2018
423-851 New Tazewell Brightspeed Of Eastern Tennessee N/A
423-852 Dunlap Level 3 Communications 05/18/2023
423-853 Johnson City Multiple 1/21/2022
423-854 Johnson City United Telephone-Southeast-Tn N/A
423-855 Chattanooga Bellsouth Telecomm N/A
423-856 Athens Multiple 9/16/2016
423-857 Kingsport United Telephone-Southeast-Tn N/A
423-858 Blountville Multiple 08/11/2023
423-859 Rogersville Onvoy 05/31/2023
423-860 Chattanooga Multiple 7/1/2022
423-862 Spring City Multiple 08/22/2023
423-863 Kingsport Cellco Partnership N/A
423-864 Decatur Multiple 05/18/2023
423-866 Niota Multiple 08/07/2023
423-867 Chattanooga Bellsouth Telecomm N/A
423-868 Mosheim Multiple 08/22/2023
423-869 Cumberland Gap Multiple N/A
423-870 Chattanooga Bellsouth Telecomm N/A
423-871 Lafollette Multiple N/A
423-872 Chattanooga Multiple 05/23/2023
423-873 Stoney Creek Multiple 7/15/2020
423-874 Chattanooga Multiple N/A
423-875 Chattanooga Bellsouth Telecomm N/A
423-876 Chattanooga Multiple N/A
423-877 Chattanooga Bellsouth Telecomm N/A
423-878 Bristol United Telephone-Southeast-Tn N/A
423-879 Georgetown Onvoy 08/22/2023
423-880 Johnson City Multiple 3/31/2021
423-881 Fall Creek Falls Bledsoe Tel. Coop. N/A
423-882 Chattanooga Bellsouth Telecomm 10/26/2011
423-883 Chattanooga Multiple N/A
423-884 Vonore Tellico Tel. Co. N/A
423-885 Englewood Multiple N/A
423-886 Chattanooga Bellsouth Telecomm N/A
423-887 Englewood Multiple N/A
423-888 Chattanooga Multiple 8/17/2015
423-889 Cleveland Multiple 08/30/2023
423-890 Bristol New Cingular Wireless PCS 09/06/2023
423-892 Chattanooga Bellsouth Telecomm N/A
423-893 Chattanooga Multiple N/A
423-894 Chattanooga Bellsouth Telecomm N/A
423-895 Elizabethton Multiple N/A
423-896 Hampton Multiple N/A
423-897 Fall Branch Multiple N/A
423-898 Charleston Multiple 10/12/2023
423-899 Chattanooga Bellsouth Telecomm N/A
423-900-XXXX --- 423-999-XXXX
NPANXX Area served[1] Provider[2] Date[3]
423-900 Johnson City Multiple 2/16/2011
423-902 Chattanooga New Cingular Wireless PCS N/A
423-903 Chattanooga New Cingular Wireless PCS N/A
423-904 Chattanooga Multiple 4/13/2021
423-905 Johnson City Multiple 4/13/2021
423-906 Johnson City Multiple 10/24/2023
423-907 Lafollette Multiple N/A
423-908 Surgoinsville Commio 01/09/2024
423-909 South Pittsburgh Multiple 05/18/2023
423-910 Ooltewah Multiple 3/19/2007
423-912 Lafollette New Cingular Wireless PCS N/A
423-913 Jonesboro Multiple N/A
423-914 Bristol Cellco Partnership N/A
423-915 Johnson City Multiple N/A
423-917 Blountville United Telephone-Southeast-Tn N/A
423-918 Oneida New Cingular Wireless PCS 12/12/2024
423-919 New Tazewell Multiple 10/1/2019
423-920 Athens New Cingular Wireless PCS N/A
423-921 Rogersville Multiple N/A
423-922 Baileyton Multiple 7/15/2020
423-923 Rogersville New Cingular Wireless PCS N/A
423-924 Johnson City Multiple 03/10/2025
423-925 Lafollette Multiple 3/23/2022
423-926 Johnson City United Telephone-Southeast-Tn N/A
423-927 Morristown Multiple 3/1/2022
423-928 Johnson City United Telephone-Southeast-Tn N/A
423-929 Johnson City United Telephone-Southeast-Tn N/A
423-930 Johnson City Multiple 2/13/2009
423-932 Etowah Multiple 1/20/2022
423-933 Chattanooga Multiple 6/14/2002
423-934 Surgoinsville Multiple 3/18/2021
423-936 Sunbright Comcast IP Phone 05/14/2024
423-938 Johnson City United Telephone-Southeast-Tn 8/13/2002
423-939 Jasper Multiple 6/21/2005
423-940 Dayton Multiple 03/20/2023
423-941 Deer Lodge Comcast IP Phone 05/14/2024
423-942 Jasper Bellsouth Telecomm N/A
423-943 Johnson City Suncom N/A
423-944 Clinchport Scott County Tel. Coop. N/A
423-945 College Station Charter IP Enabled Services 06/26/2025
423-946 Johnson City Multiple 3/9/2001
423-948 Limestone Multiple N/A
423-949 Dunlap Bledsoe Tel. Coop. N/A
423-951 Charleston Powertel Atlanta Licenses 06/06/2024
423-952 Johnson City Multiple N/A
423-953 Johnson City United Telephone-Southeast-Tn N/A
423-954 Chattanooga Multiple N/A
423-955 Whitwell Multiple 7/15/2020
423-956 Bristol Cellco Partnership N/A
423-957 Hampton Multiple N/A
423-960 Chattanooga Multiple 02/24/2025
423-961 Georgetown Multiple N/A
423-963 Kingsport Multiple 3/9/2001
423-965 Deer Lodge Highland Tel. Coop N/A
423-966 Ball Play Multiple 7/15/2020
423-967 Kingsport Multiple N/A
423-968 Bristol United Telephone-Southeast-Tn N/A
423-969 Cleveland Multiple 06/30/2025
423-972 Greeneville Multiple N/A
423-973 Sneedville Multiple 4/30/2002
423-975 Johnson City United Telephone-Southeast-Tn N/A
423-977 Chattanooga Multiple 7/18/2019
423-978 Chattanooga Wavenation 07/11/2025
423-979 Johnson City Multiple N/A
423-980 Chattanooga Multiple 3/31/2021
423-981 Johnson City Wavenation 07/11/2025
423-987 Chattanooga New Cingular Wireless PCS N/A
423-989 Bristol United Telephone-Southeast-Tn N/A
423-990 Bristol United Telephone-Southeast-Tn N/A
423-991 Chattanooga New Cingular Wireless PCS N/A
423-992 Bristol Terra Nova Telecom 08/13/2025
423-993 Chattanooga HD Carrier N/A
423-994 Chattanooga Multiple 5/10/2007
423-995 Johnson City HD Carrier N/A
423-996 Charleston Multiple 09/25/2025
423-997 Elizabethton Multiple 08/07/2025
423-998 Jellico Commio 10/10/2022
423-999 Athens Multiple 3/30/2011
  1. 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.
  2. A single provider refers to the original company controlling a whole NPA-NXX block (10,000 phone numbers). With Number Pooling, NPA-NXX blocks can be split into ten 1,000 phone number blocks and handed over to other service providers (available in the USA and Puerto Rico).
  3. Assignment date. N/A: unavailable date or central office code assigned before 2001.
  4. NXX prefixes last updated: February 13, 2026

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 423 Area Code