| 423-200 | Morristown | Landline | Level 3 Communications |
| 423-201 | La Follette | Landline | Level 3 Communications |
| 423-202 | Johnson City | Landline | Mcimetro Access Transmission Services |
| 423-205 | Etowah | Landline | Onvoy |
| 423-206 | Morristown | Landline | Rclec |
| 423-207 | Kingsport | Landline | Level 3 Communications |
| 423-208 | Chattanooga | Wireless | New Cingular Wireless |
| 423-209 | Chattanooga | Landline | South Central Bell Tel |
| 423-210 | Tellico Plains | Wireless | United States Cellular |
| 423-212 | Blountville | Landline | Level 3 Communications |
| 423-213 | Unicoi | Wireless | Sprint Spectrum |
| 423-214 | Englewood | Wireless | United States Cellular |
| 423-215 | Oneida | Wireless | Verizon |
| 423-216 | Benton | Landline | Deltacom |
| 423-217 | Bristol | Landline | Level 3 Communications |
| 423-218 | Johnson City | Landline | Level 3 Communications |
| 423-219 | Turtletown | Landline | Teleport Communications America |
| 423-220 | Johnson City | Landline | US Lec Of Tennessee |
| 423-221 | Chattanooga | Landline | USA Mobility Wireless |
| 423-222 | Morristown | Landline | Pagepro |
| 423-223 | Oneida | Landline | New Cingular Wireless |
| 423-224 | Kingsport | Landline | CenturyLink |
| 423-225 | Benton | Landline | Level 3 Communications |
| 423-226 | Mount Carmel | Landline | Bandwidth.com |
| 423-227 | Chattanooga | Wireless | Powertel Atlanta Licenses |
| 423-228 | South Pittsburg | Landline | US Lec Of Tennessee |
| 423-229 | Kingsport | Landline | CenturyLink |
| 423-230 | Kingsport | Landline | CenturyLink |
| 423-231 | Morristown | Wireless | New Cingular Wireless |
| 423-232 | Johnson City | Landline | CenturyLink |
| 423-233 | Johnson City | Landline | Pro Page Partners |
| 423-234 | Surgoinsville | Landline | CenturyLink |
| 423-235 | Bulls Gap | Landline | South Central Bell Tel |
| 423-236 | Apison | Landline | CenturyLink |
| 423-237 | Newport | Wireless | New Cingular Wireless |
| 423-238 | Ooltewah | Landline | CenturyLink |
| 423-239 | Kingsport | Landline | CenturyLink |
| 423-240 | Chattanooga | Wireless | Verizon |
| 423-241 | Turtletown | Wireless | Verizon |
| 423-242 | Chattanooga | Landline | Teleport Communications America |
| 423-243 | Chattanooga | Landline | Teleport Communications America |
| 423-244 | Cleveland | Landline | Teleport Communications America |
| 423-245 | Kingsport | Landline | CenturyLink |
| 423-246 | Kingsport | Landline | CenturyLink |
| 423-247 | Kingsport | Landline | CenturyLink |
| 423-248 | Newport | Wireless | United States Cellular |
| 423-249 | Speedwell | Landline | South Central Bell Tel |
| 423-250 | Cleveland | Landline | Twin Lakes Communications |
| 423-251 | Kingsport | Wireless | T-Mobile |
| 423-252 | Athens | Landline | US Lec Of Tennessee |
| 423-253 | Tellico Plains | Landline | Tellico Tel. |
| 423-254 | Morristown | Landline | Business Telecom |
| 423-255 | Chattanooga | Landline | Powertel Atlanta Licenses |
| 423-256 | Mount Carmel | Landline | CenturyLink |
| 423-257 | Limestone | Landline | CenturyLink |
| 423-258 | Morristown | Wireless | New Cingular Wireless |
| 423-259 | New Tazewell | Wireless | United States Cellular |
| 423-260 | Chattanooga | Wireless | Verizon |
| 423-261 | Turtletown | Landline | Tellico Tel. |
| 423-262 | Johnson City | Landline | CenturyLink |
| 423-263 | Etowah | Landline | South Central Bell Tel |
| 423-264 | Vonore | Landline | Comcast Ip Phone |
| 423-265 | Chattanooga | Landline | South Central Bell Tel |
| 423-266 | Chattanooga | Landline | South Central Bell Tel |
| 423-267 | Chattanooga | Landline | South Central Bell Tel |
| 423-268 | Johnson City | Wireless | New Cingular Wireless |
| 423-269 | Chattanooga | Wireless | Verizon |
| 423-270 | Erwin | Wireless | Verizon |
| 423-271 | Sweetwater | Wireless | Verizon |
| 423-272 | Rogersville | Landline | South Central Bell Tel |
| 423-273 | Morristown | Wireless | Sprint Spectrum |
| 423-274 | Bristol | Landline | CenturyLink |
| 423-275 | Chattanooga | Landline | Pager One Of Florida |
| 423-276 | Kingsport | Wireless | New Cingular Wireless |
| 423-277 | Morristown | Wireless | Sprint Spectrum |
| 423-278 | Greeneville | Landline | Level 3 Communications |
| 423-279 | Blountville | Landline | CenturyLink |
| 423-280 | Chattanooga | Wireless | Verizon |
| 423-281 | Butler | Landline | Charter Fiberlink-tennessee |
| 423-282 | Johnson City | Landline | CenturyLink |
| 423-283 | Johnson City | Landline | CenturyLink |
| 423-284 | Cleveland | Wireless | New Cingular Wireless |
| 423-285 | Dayton | Wireless | New Cingular Wireless |
| 423-286 | Oneida | Landline | Highland Tel. Coop |
| 423-287 | Chattanooga | Landline | South Central Bell Tel |
| 423-288 | Kingsport | Landline | CenturyLink |
| 423-289 | Morristown | Landline | AT&T |
| 423-290 | Chattanooga | Wireless | Verizon |
| 423-291 | Mountain City | Wireless | Sprint Spectrum |
| 423-292 | Fall Branch | Wireless | T-Mobile |
| 423-293 | Rogersville | Wireless | Sprint Spectrum |
| 423-294 | Chattanooga | Landline | CenturyLink Communications |
| 423-295 | Vonore | Landline | Tellico Tel. |
| 423-296 | Chattanooga | Landline | South Central Bell Tel |
| 423-297 | Elizabethton | Landline | Level 3 Communications |
| 423-298 | Chattanooga | Landline | AT&T |
| 423-299 | Benton | Wireless | Level 3 Communications |
| 423-300 | Sneedville | Wireless | Verizon |
| 423-301 | South Pittsburg | Landline | Mcimetro Access Transmission Services |
| 423-302 | Johnson City | Landline | Bandwidth.com |
| 423-303 | Cleveland | Landline | US Lec Of Tennessee |
| 423-304 | Chattanooga | Wireless | New Cingular Wireless |
| 423-305 | Chattanooga | Landline | Comcast Phone Of Tennessee |
| 423-306 | Kingsport | Wireless | Verizon |
| 423-307 | Morristown | Landline | Windstream Norlight |
| 423-308 | Chattanooga | Landline | US Lec Of Tennessee |
| 423-309 | Chattanooga | Wireless | Verizon |
| 423-310 | Cleveland | Wireless | New Cingular Wireless |
| 423-312 | Morristown | Wireless | Verizon |
| 423-313 | Chattanooga | Wireless | Powertel Atlanta Licenses |
| 423-314 | Chattanooga | Wireless | Powertel Atlanta Licenses |
| 423-315 | Chattanooga | Wireless | New Cingular Wireless |
| 423-316 | Chattanooga | Wireless | Powertel Atlanta Licenses |
| 423-317 | Morristown | Landline | South Central Bell Tel |
| 423-318 | Morristown | Landline | South Central Bell Tel |
| 423-319 | Huntsville | Landline | Highland Tel. Coop |
| 423-320 | Chattanooga | Wireless | New Cingular Wireless |
| 423-321 | Chattanooga | Landline | South Central Bell Tel |
| 423-322 | Chattanooga | Wireless | Verizon |
| 423-323 | Blountville | Landline | CenturyLink |
| 423-324 | Wartburg | Landline | Highland Tel. Coop |
| 423-325 | Blountville | Landline | CenturyLink |
| 423-326 | Chattanooga | Landline | South Central Bell Tel |
| 423-327 | Bulls Gap | Wireless | Verizon |
| 423-328 | Johnson City | Landline | Comcast Ip Phone |
| 423-329 | Greeneville | Wireless | New Cingular Wireless |
| 423-330 | Erwin | Wireless | New Cingular Wireless |
| 423-331 | Cleveland | Wireless | Powertel Atlanta Licenses |
| 423-332 | Soddy Daisy | Landline | South Central Bell Tel |
| 423-333 | Athens | Landline | Sprint Spectrum |
| 423-334 | Decatur | Landline | South Central Bell Tel |
| 423-335 | Kingsport | Wireless | Verizon |
| 423-336 | Charleston | Landline | South Central Bell Tel |
| 423-337 | Sweetwater | Landline | South Central Bell Tel |
| 423-338 | Benton | Landline | South Central Bell Tel |
| 423-339 | Cleveland | Landline | South Central Bell Tel |
| 423-340 | Bristol | Wireless | Sprint Spectrum |
| 423-341 | Bristol | Wireless | Verizon |
| 423-342 | Elizabethton | Wireless | New Cingular Wireless |
| 423-343 | Kingsport | Landline | CenturyLink |
| 423-344 | Chattanooga | Landline | South Central Bell Tel |
| 423-345 | Surgoinsville | Landline | South Central Bell Tel |
| 423-346 | Wartburg | Landline | Highland Tel. Coop |
| 423-347 | Rogersville | Landline | Windstream Nuvox |
| 423-348 | Fall Branch | Landline | CenturyLink |
| 423-349 | Kingsport | Landline | CenturyLink |
| 423-350 | Bledsoe | | Si Wireless |
| 423-351 | Sweetwater | Landline | South Central Bell Tel |
| 423-352 | La Follette | Landline | US Lec Of Tennessee |
| 423-353 | Morristown | Landline | Windstream Norlight |
| 423-354 | Blountville | Landline | CenturyLink |
| 423-355 | Chattanooga | Wireless | New Cingular Wireless |
| 423-356 | Chattanooga | Wireless | New Cingular Wireless |
| 423-357 | Mount Carmel | Landline | CenturyLink |
| 423-358 | Rogersville | Wireless | Sprint Spectrum |
| 423-359 | Greeneville | Landline | CenturyLink |
| 423-360 | Kingsport | Wireless | Verizon |
| 423-361 | Kingsport | Wireless | Verizon |
| 423-362 | Chattanooga | Wireless | New Cingular Wireless |
| 423-363 | Huntsville | Wireless | United States Cellular |
| 423-364 | Chattanooga | Wireless | New Cingular Wireless |
| 423-365 | Spring City | Landline | South Central Bell Tel |
| 423-366 | Bristol | Wireless | New Cingular Wireless |
| 423-367 | Kingsport | Wireless | New Cingular Wireless |
| 423-368 | Athens | Wireless | Verizon |
| 423-369 | Oakdale | Landline | Highland Tel. Coop |
| 423-370 | Athens | Landline | Onvoy |
| 423-371 | Sweetwater | Wireless | Sprint Spectrum |
| 423-373 | Bulls Gap | Landline | Onvoy |
| 423-374 | La Follette | Landline | Onvoy |
| 423-375 | Benton | Landline | AT&T |
| 423-376 | Madisonville | Landline | Onvoy |
| 423-377 | La Follette | Wireless | United States Cellular |
| 423-378 | Kingsport | Landline | CenturyLink |
| 423-379 | Newport | Landline | Onvoy |
| 423-380 | Cleveland | Wireless | Bandwidth.com |
| 423-381 | Athens | Wireless | Sprint Spectrum |
| 423-382 | Sneedville | Landline | Onvoy |
| 423-383 | Bristol | Wireless | T-Mobile |
| 423-384 | Fall Branch | Wireless | T-Mobile |
| 423-385 | Chattanooga | Landline | US Lec Of Tennessee |
| 423-386 | Chattanooga | Landline | South Central Bell Tel |
| 423-387 | Chattanooga | Landline | Metro Beeper Service |
| 423-388 | Erwin | Wireless | Sprint Spectrum |
| 423-389 | Kingsport | Wireless | Verizon |
| 423-390 | Kingsport | Landline | CenturyLink |
| 423-391 | Bluff City | Landline | CenturyLink |
| 423-392 | Kingsport | Landline | CenturyLink |
| 423-393 | Bulls Gap | Landline | Charter Fiberlink-tennessee |
| 423-394 | Chattanooga | Wireless | New Cingular Wireless |
| 423-395 | Chattanooga | Landline | USA Mobility Wireless |
| 423-396 | Ooltewah | Landline | CenturyLink |
| 423-397 | Benton | Landline | Bandwidth.com |
| 423-398 | Kingsport | Wireless | Sprint Spectrum |
| 423-399 | La Follette | Wireless | USA Mobility Wireless |
| 423-400 | Chattanooga | Landline | Sprint Spectrum |
| 423-401 | Chattanooga | Landline | US Lec Of Tennessee |
| 423-402 | Chattanooga | Landline | Bandwidth.com |
| 423-403 | South Pittsburg | Landline | Bandwidth.com |
| 423-404 | Madisonville | Wireless | New Cingular Wireless |
| 423-405 | Athens | Wireless | Sprint Spectrum |
| 423-406 | Kingsport | Landline | Comcast Ip Phone |
| 423-407 | Athens | Wireless | Twin Lakes Communications |
| 423-408 | Kingsport | Landline | Teleport Communications America |
| 423-409 | Bulls Gap | Wireless | USA Mobility Wireless |
| 423-410 | Johnson City | Wireless | CenturyLink |
| 423-412 | Johnson City | Wireless | USA Mobility Wireless |
| 423-413 | Chattanooga | Wireless | Verizon |
| 423-414 | Chattanooga | Landline | Peace Communications |
| 423-415 | Newport | Wireless | Verizon |
| 423-416 | Kingsport | Wireless | Verizon |
| 423-417 | Chattanooga | Landline | Mcimetro Access Transmission Services |
| 423-418 | Kingsport | Wireless | Verizon |
| 423-419 | Tazewell | Wireless | Verizon |
| 423-420 | Madisonville | Landline | South Central Bell Tel |
| 423-421 | Chattanooga | Wireless | Sprint Spectrum |
| 423-422 | Mosheim | Landline | CenturyLink |
| 423-424 | Chattanooga | Landline | US Lec Of Tennessee |
| 423-425 | Chattanooga | Landline | South Central Bell Tel |
| 423-426 | Limestone | Wireless | Verizon |
| 423-427 | Madisonville | Wireless | Onvoy |
| 423-428 | Dayton | Landline | Deltacom |
| 423-429 | Kingsport | Wireless | New Cingular Wireless |
| 423-430 | Johnson City | Wireless | Brightlink Communications |
| 423-431 | Johnson City | Landline | CenturyLink |
| 423-432 | Chattanooga | Landline | Sprint Spectrum |
| 423-433 | Johnson City | Landline | CenturyLink |
| 423-434 | Johnson City | Landline | CenturyLink |
| 423-435 | Athens | Landline | Level 3 Communications |
| 423-436 | Madisonville | Landline | Level 3 Communications |
| 423-437 | La Follette | Landline | Level 3 Communications |
| 423-438 | Morristown | Landline | Level 3 Communications |
| 423-439 | Johnson City | Landline | CenturyLink |
| 423-440 | Elizabethton | Wireless | Verizon |
| 423-441 | Tazewell | Wireless | Sprint Spectrum |
| 423-442 | Madisonville | Landline | South Central Bell Tel |
| 423-443 | Chattanooga | Landline | Level 3 Communications |
| 423-444 | Limestone | Wireless | Verizon |
| 423-445 | Surgoinsville | Landline | AT&T |
| 423-446 | Fall Branch | Wireless | CenturyLink Communications |
| 423-447 | Pikeville | Landline | Bledsoe Tel. |
| 423-448 | Pikeville | Wireless | New Cingular Wireless |
| 423-449 | La Follette | Landline | Deltacom |
| 423-450 | Mosheim | Landline | Comcast Ip Phone |
| 423-451 | Soddy Daisy | Landline | South Central Bell Tel |
| 423-452 | Spring City | Landline | South Central Bell Tel |
| 423-453 | Athens | Landline | Level 3 Communications |
| 423-454 | Decatur | Landline | Level 3 Communications |
| 423-455 | Jellico | Landline | Level 3 Communications |
| 423-456 | La Follette | Wireless | Telnyx |
| 423-457 | Cleveland | Wireless | Verizon |
| 423-458 | Cleveland | Wireless | New Cingular Wireless |
| 423-459 | Chattanooga | Wireless | Teleport Communications America |
| 423-460 | Mountain City | Landline | Bandwidth.com |
| 423-461 | Johnson City | Landline | CenturyLink |
| 423-462 | Riceville | Landline | Tellico Tel. |
| 423-463 | Chattanooga | Landline | South Central Bell Tel |
| 423-464 | Cleveland | Wireless | Powertel Atlanta Licenses |
| 423-465 | Newport | Wireless | New Cingular Wireless |
| 423-466 | Athens | Wireless | Powertel Nashville Licenses |
| 423-467 | Kingsport | Landline | CenturyLink |
| 423-468 | Chattanooga | Landline | Fusion Cloud Services |
| 423-469 | Newport | Wireless | USA Mobility Wireless |
| 423-470 | Greeneville | Wireless | Verizon |
| 423-471 | Mountain City | Wireless | New Cingular Wireless |
| 423-472 | Cleveland | Landline | South Central Bell Tel |
| 423-473 | Cleveland | Landline | South Central Bell Tel |
| 423-474 | Shady Valley | Landline | CenturyLink |
| 423-475 | Chattanooga | Wireless | Sprint Spectrum |
| 423-476 | Cleveland | Landline | South Central Bell Tel |
| 423-477 | Kingsport | Landline | CenturyLink |
| 423-478 | Cleveland | Landline | South Central Bell Tel |
| 423-479 | Cleveland | Landline | South Central Bell Tel |
| 423-480 | Kingsport | Wireless | Verizon |
| 423-481 | Roan Mountain | Landline | Bandwidth.com |
| 423-482 | Blountville | Landline | Level 3 Communications |
| 423-483 | Johnson City | Landline | Verizon |
| 423-484 | Bristol | Landline | Level 3 Communications |
| 423-485 | Chattanooga | Landline | South Central Bell Tel |
| 423-486 | Chattanooga | Wireless | Verizon |
| 423-487 | Hartford | Landline | South Central Bell Tel |
| 423-488 | Chattanooga | Wireless | New Cingular Wireless |
| 423-489 | Tazewell | Wireless | New Cingular Wireless |
| 423-490 | Chattanooga | Landline | South Central Bell Tel |
| 423-491 | Johnson City | Landline | CenturyLink Communications |
| 423-492 | Morristown | Landline | South Central Bell Tel |
| 423-493 | Chattanooga | Landline | South Central Bell Tel |
| 423-494 | La Follette | Wireless | Verizon |
| 423-495 | Chattanooga | Landline | South Central Bell Tel |
| 423-496 | Copperhill | Landline | South Central Bell Tel |
| 423-497 | Chattanooga | Wireless | T-Mobile |
| 423-498 | Chattanooga | Landline | Electric Power Board Of Chattanooga |
| 423-499 | Chattanooga | Landline | South Central Bell Tel |
| 423-500 | Rogersville | Landline | Charter Fiberlink-tennessee |
| 423-501 | Mountain City | Landline | Skybest Communications |
| 423-502 | Kingsport | Wireless | Verizon |
| 423-503 | Chattanooga | Landline | Sprint Spectrum |
| 423-504 | Chattanooga | Landline | Sprint Spectrum |
| 423-505 | Chattanooga | Landline | Sprint Spectrum |
| 423-506 | Athens | Wireless | Verizon |
| 423-507 | Athens | Landline | South Central Bell Tel |
| 423-508 | Chattanooga | Landline | Teleport Communications America |
| 423-509 | Chattanooga | Landline | Onvoy |
| 423-510 | Chattanooga | Landline | South Central Bell Tel |
| 423-512 | Elizabethton | Wireless | Verizon |
| 423-513 | Chattanooga | Landline | USA Mobility Wireless |
| 423-514 | Chattanooga | Landline | USA Mobility Wireless |
| 423-515 | Dayton | Landline | Onvoy |
| 423-516 | Kingsport | Landline | CenturyLink |
| 423-517 | Chattanooga | Landline | South Central Bell Tel |
| 423-518 | Elizabethton | Wireless | Sprint Spectrum |
| 423-519 | Tellico Plains | Wireless | United States Cellular |
| 423-520 | Madisonville | Landline | US Lec Of Tennessee |
| 423-521 | Chattanooga | Wireless | Powertel Atlanta Licenses |
| 423-522 | Morristown | Landline | South Central Bell Tel |
| 423-523 | Bulls Gap | Wireless | Verizon |
| 423-524 | Johnson City | Wireless | Brightlink Communications |
| 423-525 | Greeneville | Landline | Level 3 Communications |
| 423-526 | New Tazewell | Landline | CenturyLink-claiborne |
| 423-527 | Chattanooga | Landline | Cellular Page |
| 423-528 | Rogersville | Wireless | Bandwidth.com |
| 423-529 | Georgetown | Landline | Deltacom |
| 423-530 | Kingsport | Wireless | Sprint Spectrum |
| 423-531 | Chattanooga | Landline | Electric Power Board Of Chattanooga |
| 423-532 | Newport | Landline | US Lec Of Tennessee |
| 423-533 | Spring City | Landline | Bledsoe Tel. |
| 423-534 | Bristol | Wireless | Verizon |
| 423-535 | Chattanooga | Landline | Mcimetro Access Transmission Services |
| 423-536 | Sweetwater | Landline | US Lec Of Tennessee |
| 423-537 | Bulls Gap | Landline | US Lec Of Tennessee |
| 423-538 | Bluff City | Landline | CenturyLink |
| 423-539 | Oneida | Wireless | New Cingular Wireless |
| 423-540 | Newport | Landline | Peerless Network Of Tennessee |
| 423-541 | Chattanooga | Landline | Vonage America |
| 423-542 | Elizabethton | Landline | CenturyLink |
| 423-543 | Elizabethton | Landline | CenturyLink |
| 423-544 | Chattanooga | Wireless | Sprint Spectrum |
| 423-545 | Madisonville | Landline | Level 3 Communications |
| 423-546 | Bulls Gap | Landline | Level 3 Communications |
| 423-547 | Elizabethton | Landline | CenturyLink |
| 423-548 | Turtletown | Landline | Etc Communications |
| 423-549 | Johnson City | Landline | Vonage America |
| 423-550 | Chattanooga | Landline | Cellular Page |
| 423-551 | Chattanooga | Landline | CenturyLink Communications |
| 423-552 | Greeneville | Wireless | Verizon |
| 423-553 | Chattanooga | Landline | South Central Bell Tel |
| 423-554 | Pikeville | Landline | Bledsoe Tel. |
| 423-556 | Soddy Daisy | Landline | Bandwidth.com |
| 423-557 | Sweetwater | Wireless | T-Mobile |
| 423-559 | Cleveland | Landline | South Central Bell Tel |
| 423-560 | Watauga | Landline | Onvoy |
| 423-561 | Sweetwater | Landline | CenturyLink Communications |
| 423-562 | La Follette | Landline | South Central Bell Tel |
| 423-563 | La Follette | Landline | South Central Bell Tel |
| 423-564 | Rogersville | Wireless | Verizon |
| 423-565 | Decatur | Landline | Bandwidth.com |
| 423-566 | La Follette | Landline | South Central Bell Tel |
| 423-567 | Dayton | Wireless | New Cingular Wireless |
| 423-568 | Niota | Landline | Tellico Tel. |
| 423-569 | Oneida | Landline | Highland Tel. Coop |
| 423-570 | Dayton | Landline | South Central Bell Tel |
| 423-571 | Kingsport | Wireless | Verizon |
| 423-572 | Englewood | Wireless | United States Cellular |
| 423-573 | Bristol | Landline | Bristol Tennessee Essential Services |
| 423-574 | Blountville | Landline | Bristol Tennessee Essential Services |
| 423-575 | Bluff City | Landline | Bristol Tennessee Essential Services |
| 423-576 | | | East Tennessee Network |
| 423-577 | Oneida | Wireless | New Cingular Wireless |
| 423-578 | Washington | Landline | CenturyLink |
| 423-579 | Kingsport | Landline | Mountainet Telephone Company |
| 423-580 | Chattanooga | Wireless | New Cingular Wireless |
| 423-581 | Morristown | Landline | South Central Bell Tel |
| 423-582 | Chattanooga | Landline | South Central Bell Tel |
| 423-583 | Kingsport | Landline | Bandwidth.com |
| 423-584 | Cleveland | Wireless | New Cingular Wireless |
| 423-585 | Morristown | Landline | South Central Bell Tel |
| 423-586 | Morristown | Landline | South Central Bell Tel |
| 423-587 | Morristown | Landline | South Central Bell Tel |
| 423-588 | Greeneville | Wireless | Verizon |
| 423-589 | Georgetown | Wireless | New Cingular Wireless |
| 423-590 | South Pittsburg | Landline | Bandwidth.com |
| 423-591 | Chattanooga | Landline | Ymax Communications |
| 423-592 | La Follette | Wireless | United States Cellular |
| 423-593 | Chattanooga | Wireless | Sprint Spectrum |
| 423-594 | Dayton | Landline | AT&T |
| 423-595 | Chattanooga | Wireless | Sprint Spectrum |
| 423-596 | Chattanooga | Wireless | New Cingular Wireless |
| 423-597 | Benton | Landline | Bandwidth.com |
| 423-598 | Chattanooga | Wireless | New Cingular Wireless |
| 423-599 | Cleveland | Wireless | Verizon |
| 423-600 | Apison | Landline | Comcast Phone Of Tennessee |
| 423-601 | Bulls Gap | Landline | South Central Bell Tel |
| 423-602 | Chattanooga | Wireless | Brightlink Communications |
| 423-603 | Speedwell | Landline | AT&T |
| 423-605 | Chattanooga | Wireless | Verizon |
| 423-606 | Englewood | Landline | Comcast Ip Phone |
| 423-607 | Limestone | Wireless | Verizon |
| 423-608 | Newport | Wireless | Verizon |
| 423-609 | Greeneville | Wireless | Verizon |
| 423-610 | Johnson City | Landline | CenturyLink |
| 423-612 | Bristol | Wireless | Verizon |
| 423-613 | Newport | Landline | South Central Bell Tel |
| 423-614 | Cleveland | Landline | South Central Bell Tel |
| 423-615 | Ooltewah | Landline | Comcast Phone Of Tennessee |
| 423-616 | Morristown | Landline | Mrstwn Ut Sys Fibernet |
| 423-617 | Athens | Wireless | Powertel Nashville Licenses |
| 423-618 | Chattanooga | Wireless | Verizon |
| 423-619 | Chattanooga | Wireless | Verizon |
| 423-620 | Greeneville | Wireless | Verizon |
| 423-622 | Chattanooga | Landline | South Central Bell Tel |
| 423-623 | Newport | Landline | South Central Bell Tel |
| 423-624 | Chattanooga | Landline | South Central Bell Tel |
| 423-625 | Newport | Landline | South Central Bell Tel |
| 423-626 | New Tazewell | Landline | CenturyLink-claiborne |
| 423-627 | Robbins | Landline | Highland Tel. Coop |
| 423-628 | Sunbright | Landline | Highland Tel. Coop |
| 423-629 | Chattanooga | Landline | South Central Bell Tel |
| 423-630 | Johnson City | Landline | Telescan |
| 423-631 | Johnson City | Landline | Charter Fiberlink-tennessee |
| 423-632 | Wartburg | Landline | Twin Lakes Communications |
| 423-633 | Chattanooga | Landline | Telnyx |
| 423-634 | Chattanooga | Landline | South Central Bell Tel |
| 423-635 | Chattanooga | Wireless | New Cingular Wireless |
| 423-636 | Greeneville | Landline | CenturyLink |
| 423-637 | Chattanooga | Wireless | Verizon |
| 423-638 | Greeneville | Landline | CenturyLink |
| 423-639 | Greeneville | Landline | CenturyLink |
| 423-640 | Sneedville | Landline | AT&T |
| 423-641 | Cleveland | Landline | Bandwidth.com |
| 423-642 | Chattanooga | Landline | South Central Bell Tel |
| 423-643 | Chattanooga | Landline | Electric Power Board Of Chattanooga |
| 423-644 | Soddy Daisy | Wireless | New Cingular Wireless |
| 423-645 | Chattanooga | Wireless | New Cingular Wireless |
| 423-646 | Bristol | Wireless | T-Mobile |
| 423-647 | Butler | Wireless | T-Mobile |
| 423-648 | Chattanooga | Landline | Electric Power Board Of Chattanooga |
| 423-649 | Athens | Landline | South Central Bell Tel |
| 423-650 | Cleveland | Wireless | Verizon |
| 423-651 | Jasper | Landline | Bandwidth.com |
| 423-652 | Bristol | Landline | CenturyLink |
| 423-653 | Chattanooga | Wireless | New Cingular Wireless |
| 423-654 | Chattanooga | Wireless | Csc Wireless |
| 423-655 | Chattanooga | Landline | USA Mobility Wireless |
| 423-656 | Johnson City | Wireless | Csc Wireless |
| 423-657 | Mosheim | Landline | Bandwidth.com |
| 423-658 | Whitwell | Landline | South Central Bell Tel |
| 423-659 | Turtletown | Landline | Teleport Communications America |
| 423-660 | Chattanooga | Landline | Twilio International |
| 423-661 | Chattanooga | Wireless | Verizon |
| 423-662 | Blountville | Landline | Level 3 Communications |
| 423-663 | Huntsville | Landline | Highland Tel. Coop |
| 423-664 | Chattanooga | Landline | CenturyLink Communications |
| 423-665 | Charleston | Landline | Level 3 Communications |
| 423-666 | Johnson City | Landline | Onvoy |
| 423-667 | Chattanooga | Wireless | Verizon |
| 423-668 | Chattanooga | Landline | South Central Bell Tel |
| 423-670 | Johnson City | Landline | Ip Horizon |
| 423-671 | Chattanooga | Landline | Ip Horizon |
| 423-672 | Johnson City | Landline | Telnyx |
| 423-676 | Johnson City | Wireless | T-Mobile |
| 423-677 | Fall Branch | Wireless | T-Mobile |
| 423-680 | Chattanooga | Wireless | Verizon |
| 423-681 | Chattanooga | Wireless | Verizon |
| 423-682 | Chattanooga | Wireless | Verizon |
| 423-683 | Elizabethton | Landline | Na Communications |
| 423-684 | Greeneville | Landline | Na Communications |
| 423-685 | Johnson City | Landline | Na Communications |
| 423-690 | Morristown | Landline | Telnyx |
| 423-693 | Chattanooga | Landline | CenturyLink Communications |
| 423-695 | Erwin | Landline | Na Communications |
| 423-697 | Chattanooga | Landline | South Central Bell Tel |
| 423-698 | Chattanooga | Landline | South Central Bell Tel |
| 423-699 | Mountain City | Landline | Na Communications |
| 423-701 | Robbins | Wireless | United States Cellular |
| 423-702 | Chattanooga | Landline | Level 3 Communications |
| 423-703 | Tellico Plains | Landline | Onvoy |
| 423-704 | Chattanooga | Wireless | New Cingular Wireless |
| 423-707 | Elizabethton | Wireless | New Cingular Wireless |
| 423-708 | Chattanooga | Wireless | T-Mobile |
| 423-709 | Cleveland | Landline | Deltacom |
| 423-710 | Chattanooga | Wireless | Comcast Phone Of Tennessee |
| 423-712 | Johnson City | Landline | Bandwidth.com |
| 423-713 | Chattanooga | Landline | Comcast Phone Of Tennessee |
| 423-714 | Morristown | Landline | US Lec Of Tennessee |
| 423-715 | Cleveland | Wireless | Verizon |
| 423-716 | Cleveland | Landline | Windstream Nuvox |
| 423-717 | Athens | Wireless | Powertel Nashville Licenses |
| 423-718 | Chattanooga | Wireless | Verizon |
| 423-720 | Newport | Landline | Bandwidth.com |
| 423-721 | Newport | Wireless | United States Cellular |
| 423-722 | Johnson City | Landline | Level 3 Communications |
| 423-723 | Blountville | Landline | Level 3 Communications |
| 423-724 | Sneedville | Landline | US Lec Of Tennessee |
| 423-725 | Hampton | Landline | CenturyLink |
| 423-726 | Kingsport | Wireless | Verizon |
| 423-727 | Mountain City | Landline | CenturyLink |
| 423-728 | Cleveland | Landline | South Central Bell Tel |
| 423-730 | Riceville | Landline | Comcast Ip Phone |
| 423-732 | Kingsport | Wireless | Verizon |
| 423-733 | Sneedville | Landline | South Central Bell Tel |
| 423-734 | Rogersville | Landline | Onvoy |
| 423-735 | Erwin | Landline | CenturyLink |
| 423-736 | Morristown | Wireless | Verizon |
| 423-737 | Johnson City | Wireless | New Cingular Wireless |
| 423-739 | Shady Valley | Landline | Skyline Tel. Membership |
| 423-741 | Unicoi | Wireless | New Cingular Wireless |
| 423-742 | Bristol | Wireless | Verizon |
| 423-743 | Erwin | Landline | CenturyLink |
| 423-744 | Athens | Landline | South Central Bell Tel |
| 423-745 | Athens | Landline | South Central Bell Tel |
| 423-746 | Athens | Landline | South Central Bell Tel |
| 423-747 | Johnson City | Wireless | New Cingular Wireless |
| 423-748 | Morristown | Wireless | New Cingular Wireless |
| 423-751 | Chattanooga | Landline | South Central Bell Tel |
| 423-752 | Chattanooga | Landline | South Central Bell Tel |
| 423-753 | Jonesborough | Landline | CenturyLink |
| 423-754 | Rogersville | Wireless | Verizon |
| 423-755 | Chattanooga | Landline | South Central Bell Tel |
| 423-756 | Chattanooga | Landline | South Central Bell Tel |
| 423-757 | Chattanooga | Landline | South Central Bell Tel |
| 423-758 | Bristol | Landline | US Lec Of Tennessee |
| 423-760 | Chattanooga | Wireless | New Cingular Wireless |
| 423-761 | Turtletown | Landline | Level 3 Communications |
| 423-762 | Chattanooga | Wireless | Verizon |
| 423-763 | Chattanooga | Landline | South Central Bell Tel |
| 423-764 | Bristol | Landline | CenturyLink |
| 423-765 | Kingsport | Landline | Charter Fiberlink-tennessee |
| 423-767 | Johnson City | Wireless | New Cingular Wireless |
| 423-768 | Butler | Landline | CenturyLink |
| 423-770 | Mount Carmel | Landline | Onvoy |
| 423-771 | Chattanooga | Landline | AT&T |
| 423-772 | Roan Mountain | Landline | CenturyLink |
| 423-773 | Johnson City | Wireless | T-Mobile |
| 423-774 | Soddy Daisy | Wireless | New Cingular Wireless |
| 423-775 | Dayton | Landline | South Central Bell Tel |
| 423-777 | Chattanooga | Landline | Onvoy |
| 423-778 | Chattanooga | Landline | South Central Bell Tel |
| 423-779 | Chattanooga | Landline | Windstream Nuvox |
| 423-780 | Charleston | Landline | South Central Bell Tel |
| 423-781 | Etowah | Landline | AT&T |
| 423-782 | Kingsport | Landline | US Lec Of Tennessee |
| 423-783 | Greeneville | Landline | CenturyLink |
| 423-784 | Jellico | Landline | South Central Bell Tel |
| 423-785 | Chattanooga | Landline | South Central Bell Tel |
| 423-787 | Greeneville | Landline | CenturyLink |
| 423-788 | Jonesborough | Landline | CenturyLink |
| 423-789 | Blountville | Landline | CenturyLink |
| 423-790 | Cleveland | Landline | Charter Fiberlink-tennessee |
| 423-791 | Johnson City | Wireless | Sprint Spectrum |
| 423-792 | Vonore | Landline | Tellico Tel. |
| 423-793 | Blountville | Landline | Level 3 Communications |
| 423-794 | Johnson City | Landline | US Lec Of Tennessee |
| 423-795 | Johnson City | Landline | USA Mobility Wireless |
| 423-797 | Bristol | Wireless | Verizon |
| 423-798 | Greeneville | Landline | CenturyLink |
| 423-799 | Spring City | Landline | Level 3 Communications |
| 423-800 | Chattanooga | Wireless | New Cingular Wireless |
| 423-801 | Tazewell | Wireless | United States Cellular |
| 423-802 | Chattanooga | Wireless | Verizon |
| 423-803 | Chattanooga | Landline | Electric Power Board Of Chattanooga |
| 423-805 | Chattanooga | Landline | Fusion Cloud Services |
| 423-806 | Johnson City | Landline | Bandwidth.com |
| 423-807 | Madisonville | Wireless | New Cingular Wireless |
| 423-808 | Tellico Plains | Landline | Comcast Ip Phone |
| 423-810 | Charleston | Landline | Teleport Communications America |
| 423-812 | Greeneville | Landline | Bandwidth.com |
| 423-813 | Cleveland | Wireless | Verizon |
| 423-814 | Sweetwater | Wireless | Telnyx |
| 423-815 | Whitwell | Landline | Comcast Phone Of Tennessee |
| 423-817 | Kingsport | Wireless | Sprint Spectrum |
| 423-818 | Jellico | Landline | Peerless Network Of Tennessee |
| 423-820 | Greeneville | Landline | Onvoy |
| 423-821 | Chattanooga | Landline | South Central Bell Tel |
| 423-822 | Chattanooga | Landline | South Central Bell Tel |
| 423-823 | Greeneville | Wireless | Sprint Spectrum |
| 423-824 | Unicoi | | East Tennessee Network |
| 423-825 | Chattanooga | Landline | South Central Bell Tel |
| 423-826 | Chattanooga | Landline | Deltacom |
| 423-827 | Chattanooga | Landline | South Central Bell Tel |
| 423-829 | Charleston | Wireless | New Cingular Wireless |
| 423-830 | Kingsport | Landline | Onvoy |
| 423-833 | Johnson City | Landline | T-Mobile |
| 423-834 | Chattanooga | Landline | CenturyLink Communications |
| 423-836 | Sweetwater | Wireless | Verizon |
| 423-837 | South Pittsburg | Landline | South Central Bell Tel |
| 423-838 | Chattanooga | Wireless | New Cingular Wireless |
| 423-839 | Morristown | Landline | Charter Fiberlink-tennessee |
| 423-840 | Butler | Landline | Onvoy |
| 423-842 | Soddy Daisy | Landline | South Central Bell Tel |
| 423-843 | Soddy Daisy | Landline | South Central Bell Tel |
| 423-844 | Bristol | Landline | CenturyLink |
| 423-845 | Bristol | Wireless | Verizon |
| 423-846 | Chattanooga | Landline | South Central Bell Tel |
| 423-847 | Soddy Daisy | Landline | South Central Bell Tel |
| 423-850 | Johnson City | Landline | Onvoy |
| 423-851 | New Tazewell | Landline | CenturyLink-claiborne |
| 423-854 | Johnson City | Landline | CenturyLink |
| 423-855 | Chattanooga | Landline | South Central Bell Tel |
| 423-856 | Athens | Wireless | Powertel Nashville Licenses |
| 423-857 | Kingsport | Landline | CenturyLink |
| 423-862 | | | East Tennessee Network |
| 423-863 | Blountville | Landline | Verizon |
| 423-867 | Chattanooga | Landline | South Central Bell Tel |
| 423-869 | Harrogate | Landline | South Central Bell Tel |
| 423-870 | Chattanooga | Landline | South Central Bell Tel |
| 423-871 | La Follette | Wireless | New Cingular Wireless |
| 423-873 | Elizabethton | Landline | Fractel |
| 423-874 | Chattanooga | Landline | South Central Bell Tel |
| 423-875 | Chattanooga | Landline | South Central Bell Tel |
| 423-876 | Chattanooga | Landline | South Central Bell Tel |
| 423-877 | Chattanooga | Landline | South Central Bell Tel |
| 423-878 | Bristol | Landline | CenturyLink |
| 423-881 | Spencer | Landline | Bledsoe Tel. |
| 423-882 | Chattanooga | Landline | South Central Bell Tel |
| 423-883 | Chattanooga | Landline | South Central Bell Tel |
| 423-884 | Vonore | Landline | Tellico Tel. |
| 423-885 | Vonore | Landline | Tellico Tel. |
| 423-886 | Chattanooga | Landline | South Central Bell Tel |
| 423-887 | Englewood | Landline | Tellico Tel. |
| 423-888 | Chattanooga | Landline | Onvoy |
| 423-892 | Chattanooga | Landline | South Central Bell Tel |
| 423-893 | Chattanooga | Landline | South Central Bell Tel |
| 423-894 | Chattanooga | Landline | South Central Bell Tel |
| 423-895 | Elizabethton | Wireless | Sprint Spectrum |
| 423-896 | Hampton | Landline | CenturyLink |
| 423-897 | Fall Branch | Landline | CenturyLink |
| 423-899 | Chattanooga | Landline | South Central Bell Tel |
| 423-900 | Johnson City | Landline | Ymax Communications |
| 423-902 | Chattanooga | Wireless | New Cingular Wireless |
| 423-903 | Chattanooga | Wireless | New Cingular Wireless |
| 423-907 | La Follette | Landline | South Central Bell Tel |
| 423-910 | Ooltewah | Landline | Comcast Phone Of Tennessee |
| 423-912 | La Follette | Wireless | New Cingular Wireless |
| 423-913 | Jonesborough | Landline | CenturyLink |
| 423-914 | Bristol | Wireless | Verizon |
| 423-915 | Johnson City | Landline | CenturyLink |
| 423-917 | Blountville | Landline | CenturyLink |
| 423-919 | New Tazewell | Landline | Onvoy |
| 423-920 | Athens | Wireless | New Cingular Wireless |
| 423-921 | Rogersville | Landline | South Central Bell Tel |
| 423-922 | Rogersville | Landline | Fractel |
| 423-923 | Rogersville | Wireless | New Cingular Wireless |
| 423-926 | Johnson City | Landline | CenturyLink |
| 423-928 | Johnson City | Landline | CenturyLink |
| 423-929 | Johnson City | Landline | CenturyLink |
| 423-930 | Johnson City | Landline | Mountainet Telephone Company |
| 423-933 | Chattanooga | Landline | Deltacom |
| 423-938 | Johnson City | Landline | CenturyLink |
| 423-939 | Jasper | Landline | Deltacom |
| 423-942 | Jasper | Landline | South Central Bell Tel |
| 423-943 | Johnson City | Wireless | Sprint Spectrum |
| 423-944 | Mount Carmel | Landline | Scott County Tel. |
| 423-946 | Johnson City | Wireless | Sprint Spectrum |
| 423-948 | Limestone | Wireless | Sprint Spectrum |
| 423-949 | Dunlap | Landline | Bledsoe Tel. |
| 423-952 | Johnson City | Landline | CenturyLink |
| 423-953 | Johnson City | Landline | CenturyLink |
| 423-954 | Chattanooga | Landline | South Central Bell Tel |
| 423-955 | Whitwell | Landline | Fractel |
| 423-956 | Bristol | Wireless | Verizon |
| 423-957 | Hampton | Wireless | Sprint Spectrum |
| 423-961 | Cleveland | Landline | South Central Bell Tel |
| 423-963 | Kingsport | Wireless | Sprint Spectrum |
| 423-965 | Deer Lodge | Landline | Highland Tel. Coop |
| 423-966 | Vonore | Landline | Fractel |
| 423-967 | Kingsport | Wireless | Sprint Spectrum |
| 423-968 | Bristol | Landline | CenturyLink |
| 423-972 | Greeneville | Wireless | Sprint Spectrum |
| 423-973 | Sneedville | Landline | Level 3 Communications |
| 423-975 | Johnson City | Landline | CenturyLink |
| 423-977 | Chattanooga | Landline | Fractel |
| 423-979 | Johnson City | Landline | CenturyLink |
| 423-987 | Chattanooga | Wireless | New Cingular Wireless |
| 423-989 | Bristol | Landline | CenturyLink |
| 423-990 | Bristol | Landline | CenturyLink |
| 423-991 | Chattanooga | Wireless | New Cingular Wireless |
| 423-994 | Chattanooga | Wireless | New Cingular Wireless |
| 423-999 | Athens | Wireless | Powertel Nashville Licenses |