Area Code 423 is located in the state of Texas.
The Texas`s major city is Chattanooga
The state of Texas is in Eastern / Central timezone.
More important cities in Texas:
Bristol, TN; Chattanooga, TN; Cleveland, TN; East Ridge, TN; Johnson City, TN; Kingsport, TN; Morristown, TN;
Prefixes within the 423 Area Code what we have in our database.
| Prefix | Primary City | County | Usage |
| (423) 412 | Johnson City, TN | Washington | Cell Number |
| (423) 413 | Chattanooga, TN | Hamilton | Cell Number |
| (423) 414 | Chattanooga, TN | Not filled | Unknown |
| (423) 415 | Newport, TN | Not filled | Unknown |
| (423) 416 | Kingsport, TN | Sullivan | Cell Number |
| (423) 418 | Kingsport, TN | Sullivan | Cell Number |
| (423) 419 | Not filled | Campbell | Cell Number |
| (423) 420 | Madisonville, TN | Monroe | Landline |
| (423) 421 | Chattanooga, TN | Hamilton | Cell Number |
| (423) 422 | Mosheim, TN | Greene | Landline |
| (423) 424 | Chattanooga, TN | Hamilton | Landline |
| (423) 425 | Chattanooga, TN | Hamilton | Landline |
| (423) 426 | Limestone, TN | Washington | Landline |
| (423) 427 | Madisonville, TN | Monroe | Cell Number |
| (423) 428 | Dayton, TN | Rhea | Landline |
| (423) 429 | Kingsport, TN | Not filled | Unknown |
| (423) 431 | Johnson City, TN | Washington | Landline |
| (423) 432 | Chattanooga, TN | Hamilton | Landline |
| (423) 433 | Johnson City, TN | Washington | Landline |
| (423) 434 | Johnson City, TN | Washington | Landline |
| (423) 435 | Athens, TN | Mcminn | Landline |
| (423) 436 | Madisonville, TN | Monroe | Landline |
| (423) 437 | La Follette, TN | Campbell | Landline |
| (423) 438 | Morristown, TN | Hamblen | Landline |
| (423) 439 | Johnson City, TN | Washington | Landline |
| (423) 440 | Elizabethton, TN | Not filled | Unknown |
| (423) 441 | Cumberland Gap, TN | Claiborne | Cell Number |
| (423) 442 | Madisonville, TN | Monroe | Landline |
| (423) 443 | Chattanooga, TN | Hamilton | Landline |
| (423) 444 | Limestone, TN | Not filled | Unknown |
| (423) 445 | Surgoinsville, TN | Hawkins | Landline |
| (423) 446 | Fall Branch, TN | Washington | Cell Number |
| (423) 447 | Pikeville, TN | Bledsoe | Landline |
| (423) 448 | Pikeville, TN | Not filled | Unknown |
| (423) 449 | La Follette, TN | Campbell | Landline |
| (423) 450 | Mosheim, TN | Not filled | Unknown |
| (423) 451 | Soddy Daisy, TN | Hamilton | Landline |
| (423) 452 | Spring City, TN | Rhea | Landline |
| (423) 453 | Athens, TN | Mcminn | Landline |
| (423) 454 | Decatur, TN | Meigs | Landline |
| (423) 455 | Jellico, TN | Campbell | Landline |
| (423) 456 | Not filled | Bradley | Landline |
| (423) 457 | Cleveld, TN | Not filled | Unknown |
| (423) 459 | Not filled | Not filled | Unknown |
| (423) 460 | Mountain City, TN | Not filled | Unknown |
| (423) 461 | Johnson City, TN | Washington | Landline |
| (423) 462 | Riceville, TN | Mcminn | Landline |
| (423) 463 | Chattanooga, TN | Not filled | Unknown |
| (423) 464 | Cleveld, TN | Not filled | Unknown |
| (423) 465 | Newport, TN | Cocke | Cell Number |
| (423) 467 | Kingsport, TN | Sullivan | Landline |
| (423) 468 | Chattanooga, TN | Not filled | Unknown |
| (423) 469 | Newport, TN | Cocke | Cell Number |
| (423) 470 | Greeneville, TN | Greene | Cell Number |
| (423) 471 | Mountain City, TN | Johnson | Cell Number |
| (423) 472 | Cleveland, TN | Bradley | Landline |
| (423) 473 | Cleveland, TN | Bradley | Landline |
| (423) 474 | Butler, TN | Johnson | Landline |
| (423) 475 | Chattanooga, TN | Not filled | Unknown |
| (423) 476 | Cleveland, TN | Bradley | Landline |
| (423) 477 | Kingsport, TN | Sullivan | Landline |
| (423) 478 | Cleveland, TN | Bradley | Landline |
| (423) 479 | Cleveland, TN | Bradley | Landline |
| (423) 482 | Blountville, TN | Sullivan | Landline |
| (423) 483 | Johnson City, TN | Washington | Landline |
| (423) 484 | Bristol, TN | Sullivan | Landline |
| (423) 485 | Chattanooga, TN | Hamilton | Landline |
| (423) 486 | Chattanooga, TN | Not filled | Unknown |
| (423) 487 | Hartford, TN | Cocke | Landline |
| (423) 488 | Chattanooga, TN | Hamilton | Cell Number |
| (423) 489 | Cumberland Gap, TN | Claiborne | Cell Number |
| (423) 490 | Chattanooga, TN | Hamilton | Landline |
| (423) 492 | Morristown, TN | Not filled | Unknown |
| (423) 493 | Chattanooga, TN | Hamilton | Landline |
| (423) 494 | La Follette, TN | Campbell | Cell Number |
| (423) 495 | Chattanooga, TN | Hamilton | Landline |
| (423) 496 | Copperhill, TN | Polk | Landline |
| (423) 499 | Chattanooga, TN | Hamilton | Landline |
| (423) 500 | Surgoinsville, TN | Not filled | Unknown |
| (423) 502 | Kingsport, TN | Sullivan | Cell Number |
| (423) 503 | Chattanooga, TN | Hamilton | Landline |
| (423) 504 | Chattanooga, TN | Hamilton | Landline |
| (423) 505 | Chattanooga, TN | Hamilton | Landline |
| (423) 506 | Athens, TN | Mcminn | Cell Number |
| (423) 507 | Athens, TN | Mcminn | Landline |
| (423) 508 | Chattanooga, TN | Hamilton | Landline |
| (423) 509 | Chattanooga, TN | Not filled | Unknown |
| (423) 510 | Chattanooga, TN | Hamilton | Landline |
| (423) 512 | Elizabethton, TN | Carter | Cell Number |
| (423) 513 | Chattanooga, TN | Hamilton | Landline |
| (423) 514 | Chattanooga, TN | Hamilton | Landline |
| (423) 515 | Dayton, TN | Rhea | Landline |
| (423) 517 | Chattanooga, TN | Hamilton | Landline |
| (423) 519 | Tellico Plains, TN | Monroe | Cell Number |
| (423) 520 | Madisonville, TN | Monroe | Landline |
| (423) 521 | Chattanooga, TN | Not filled | Unknown |
| (423) 522 | Morristown, TN | Hamblen | Landline |
| (423) 523 | Bulls Gap, TN | Hawkins | Cell Number |
| (423) 524 | Chattanooga, TN | Not filled | Unknown |
| (423) 525 | Greeneville, TN | Not filled | Unknown |
We have 600 Prefixes in our database.