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Area Code 423
Tennessee area code 423 has been in service since 1995. It has 401 landlines and 163 wireless prefixes (exchanges) serviced by 57 carriers. It covers 32 counties, 440 ZIP codes, and 126 cities, including Chattanooga, Kingsport, Johnson City, Cleveland, Morristown, Greeneville, Bristol, Hixson, and Athens.
- State:
- Tennessee
- Time Zone:
- Eastern (2:45 pm)
Area Code (423) has 564 prefixes
| Prefix | County | City | Company/Carrier | Line Type |
|---|---|---|---|---|
| (423) 200- | Hamblen | Morristown | Level 3 Communications, Llc... | Landline |
| (423) 201- | Campbell | La Follette | Level 3 Communications, Llc... | Landline |
| (423) 202- | Washington | Johnson City | Brooks Fiber Communications... | Landline |
| (423) 204- | Washington | Johnson City | Unknown | Landline |
| (423) 207- | Washington | Johnson City | Level 3 Communications, Llc... | Landline |
| (423) 208- | Hamilton | Chattanooga | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 209- | Hamilton | Chattanooga | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 212- | Sullivan | Blountville | Level 3 Communications, Llc... | Landline |
| (423) 213- | Carter | Elizabethton | Sprint Spectrum L.p. | Cell Phone |
| (423) 215- | Scott | Helenwood | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 216- | Hamblen | Morristown | Network Telephone Corporati... | Landline |
| (423) 217- | Sullivan | Bristol | Level 3 Communications, Llc... | Landline |
| (423) 218- | Washington | Johnson City | Level 3 Communications, Llc... | Landline |
| (423) 219- | Knox | Knoxville | Network Telephone Corporati... | Landline |
| (423) 220- | Sullivan | Blountville | Us Lec Of Tennessee, Inc | Landline |
| (423) 224- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 225- | Carter | Elizabethton | Alec, Inc. - Tn | Landline |
| (423) 227- | Hamilton | Chattanooga | Powertel Atlanta Licenses,... | Cell Phone |
| (423) 228- | Marion | South Pittsburg | Us Lec Of Tennessee, Inc | Landline |
| (423) 229- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 230- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 231- | Hamblen | Morristown | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 232- | Washington | Johnson City | United Telephone-southeast-... | Landline |
| (423) 234- | Greene | Greeneville | United Telephone-southeast-... | Landline |
| (423) 235- | Greene | Bulls Gap | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 236- | Hamilton | Apison | Centurytel Ooltewah-college... | Landline |
| (423) 237- | Cocke | Newport | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 238- | Hamilton | Ooltewah | Centurytel Ooltewah-college... | Landline |
| (423) 239- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 240- | Hamilton | Chattanooga | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 241- | Sullivan | Bristol | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 242- | Hamilton | Chattanooga | Tcg Midsouth, Inc. - Tn | Landline |
| (423) 243- | Hamilton | Chattanooga | Tcg Midsouth, Inc. - Tn | Landline |
| (423) 244- | Bradley | Cleveland | Tcg Midsouth, Inc. - Tn | Landline |
| (423) 245- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 246- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 247- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 248- | Hamblen | Morristown | United States Cellular Corp... | Landline |
| (423) 249- | Bell | Middlesboro | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 252- | McMinn | Athens | Us Lec Of Tennessee, Inc | Landline |
| (423) 253- | Monroe | Tellico Plains | Tellico Telephone Co., Inc. | Landline |
| (423) 254- | Hamblen | Morristown | Business Telecom Inc. - Bti... | Landline |
| (423) 255- | Hamilton | Chattanooga | Powertel Atlanta Licenses,... | Cell Phone |
| (423) 256- | Hawkins | Church Hill | United Telephone-southeast-... | Landline |
| (423) 257- | Greene | Chuckey | United Telephone-southeast-... | Landline |
| (423) 258- | Hamblen | Morristown | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 261- | Monroe | Tellico Plains | Tellico Telephone Co., Inc. | Landline |
| (423) 262- | Washington | Johnson City | United Telephone-southeast-... | Landline |
| (423) 263- | McMinn | Etowah | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 265- | Hamilton | Chattanooga | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 266- | Hamilton | Chattanooga | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 267- | Hamilton | Chattanooga | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 272- | Hawkins | Rogersville | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 273- | Hamblen | Morristown | Nextel Communications, Inc. | Cell Phone |
| (423) 274- | Sullivan | Bristol | United Telephone-southeast-... | Landline |
| (423) 276- | Sullivan | Kingsport | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 277- | Hamblen | Morristown | Sprint Spectrum L.p. | Cell Phone |
| (423) 278- | Greene | Greeneville | Telcove Operations, Inc. - Tn | Landline |
| (423) 279- | Sullivan | Blountville | United Telephone-southeast-... | Landline |
| (423) 280- | Hamilton | Chattanooga | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 282- | Washington | Johnson City | United Telephone-southeast-... | Landline |
| (423) 283- | Washington | Johnson City | United Telephone-southeast-... | Landline |
| (423) 284- | Bradley | Cleveland | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 285- | Rhea | Dayton | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 286- | Scott | Oneida | Highland Telephone Cooperat... | Landline |
| (423) 287- | Greene | Greeneville | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 288- | Sullivan | Kingsport | United Telephone-southeast-... | Landline |
| (423) 289- | Hamblen | Morristown | At&t Local | Landline |
| (423) 290- | Hamilton | Chattanooga | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 291- | Hamilton | Chattanooga | Sprint Spectrum L.p. | Cell Phone |
| (423) 292- | Sullivan | Kingsport | Suncom Dba T-mobile Usa | Cell Phone |
| (423) 293- | Hawkins | Rogersville | Sprint Spectrum L.p. | Cell Phone |
| (423) 294- | Hamilton | Chattanooga | Centurytel Acq Llc Dba Cent... | Landline |
| (423) 295- | Monroe | Vonore | Tellico Telephone Co., Inc. | Landline |
| (423) 296- | Hamilton | Chattanooga | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 297- | Carter | Elizabethton | Telcove Operations, Inc. - Tn | Landline |
| (423) 298- | Hamilton | Chattanooga | At&t Local | Landline |
| (423) 299- | Polk | Benton | Nextel Communications, Inc. | Cell Phone |
| (423) 303- | Hamilton | Chattanooga | Us Lec Of Tennessee, Inc | Landline |
| (423) 304- | Hamilton | Chattanooga | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 305- | Hamilton | Chattanooga | Comcast Phone Of Tennessee,... | Landline |
| (423) 306- | Bristol | Bristol | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 307- | Hamblen | Morristown | Norlight, Inc. - Tn | Landline |
| (423) 308- | Hamilton | Chattanooga | Us Lec Of Tennessee, Inc | Landline |
| (423) 309- | Hamilton | Chattanooga | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 310- | Bradley | Cleveland | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 312- | Hamblen | Morristown | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 313- | Hamilton | Chattanooga | Powertel Atlanta Licenses,... | Cell Phone |
| (423) 314- | Hamilton | Chattanooga | Powertel Atlanta Licenses,... | Cell Phone |
| (423) 315- | Hamilton | Chattanooga | New Cingular Wireless Pcs,... | Cell Phone |
| (423) 316- | Hamilton | Chattanooga | Powertel Atlanta Licenses,... | Cell Phone |
| (423) 317- | Hamblen | Morristown | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 318- | Hamblen | Morristown | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 319- | Scott | Winfield | Highland Telephone Cooperat... | Landline |
| (423) 320- | Hamilton | Chattanooga | Cricket Communications, Inc. | Cell Phone |
| (423) 321- | Hamilton | Chattanooga | Bellsouth Telecomm Inc Dba... | Landline |
| (423) 322- | Hamilton | Chattanooga | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 323- | Sullivan | Blountville | United Telephone-southeast-... | Landline |
| (423) 324- | Roane | Oliver Springs | Highland Telephone Cooperat... | Landline |
| (423) 325- | Sullivan | Blountville | United Telephone-southeast-... | Landline |
