Area Code 423
Tennessee area code 423 has been in service since 1995. It has 393 landlines and 171 wireless prefixes (exchanges) serviced by 49 carriers. It covers 31 counties, 440 ZIP codes, and 132 cities, including Chattanooga, Kingsport, Cleveland, Johnson City, Morristown, Greeneville, Bristol, Hixson, and Athens.
- State:
- Tennessee
- Time Zone:
- Eastern (12:45 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 | Bellsouth Telecomm Inc Dba ... | Landline |
| (423) 207- | Washington | Gray | 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.- Tn | 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 | Bloomingdale | 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 | Bloomingdale | United Telephone - Southeast | Landline |
| (423) 230- | Sullivan | Bloomingdale | 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 | Baileyton | United Telephone - Southeast | Landline |
| (423) 235- | Hawkins | Bulls Gap | Bellsouth Telecomm Inc Dba ... | Landline |
| (423) 236- | Hamilton | Apison | Centurytel Of Coltweah-coll... | Cell Phone |
| (423) 237- | Cocke | Newport | New Cingular Wireless Pcs, ... | Cell Phone |
| (423) 238- | Hamilton | College Dale | Centurytel Of Coltweah-coll... | Cell Phone |
| (423) 239- | Sullivan | Colonial Heights | United Telephone - Southeast | Landline |
| (423) 240- | Hamilton | Chattanooga | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 241- | Sullivan | Bloomingdale | Cellco Partnership Dba Veri... | Cell Phone |
| (423) 242- | Hamilton | Chattanooga | Tcg America, Inc. - Tn | Landline |
| (423) 243- | Hamilton | Chattanooga | Tcg America, Inc. - Tn | Landline |
| (423) 244- | Bradley | Cleveland | Tcg America, Inc. - Tn | Landline |
| (423) 245- | Sullivan | Bloomingdale | United Telephone - Southeast | Landline |
| (423) 246- | Sullivan | Bloomingdale | United Telephone - Southeast | Landline |
| (423) 247- | Sullivan | Bloomingdale | United Telephone - Southeast | Landline |
| (423) 248- | Hamblen | Morristown | United States Cellular Corp... | Cell Phone |
| (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 | Bloomingdale | New Cingular Wireless Pcs, ... | Cell Phone |
| (423) 277- | Hamblen | Morristown | Sprint Spectrum L.p.- Tn | Cell Phone |
| (423) 278- | Greene | Baileyton | 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 | Baileyton | Bellsouth Telecomm Inc Dba ... | Landline |
| (423) 288- | Sullivan | Bloomingdale | 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.- Tn | Cell Phone |
| (423) 292- | Sullivan | Bloomingdale | Suncom Wireless Operating C... | Cell Phone |
| (423) 293- | Hawkins | Rogersville | Sprint Spectrum L.p.- Tn | Cell Phone |
| (423) 294- | Hamilton | Chattanooga | Centurytel Acq., Llc Dba Km... | Cell Phone |
| (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- | Hawkins | Church Hill | Alltel Communications, Inc.... | Cell Phone |
| (423) 307- | Hamblen | Morristown | Cinergy Communications Comp... | 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 | Helenwood | 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 |
