La serie son los 4 número siguiente a la lada, los cuales se utilizan para identificar la compañia y el asentamiento al que pertenece el número telefónico.
| Serie | Tipo | Compañia | Municipio | Estado | Asentamiento |
|---|---|---|---|---|---|
| 438 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 439 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 440 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 441 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 441 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 442 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 442 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 442 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 442 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 442 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 443 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 443 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 443 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 444 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 445 | Movil | MOVISTAR | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 446 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 447 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 447 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 448 | Movil | MOVISTAR | Chihuahua | Chihuahua | Chihuahua |
| 449 | Movil | MOVISTAR | Chihuahua | Chihuahua | Chihuahua |
| 450 | Movil | MOVISTAR | Chihuahua | Chihuahua | Chihuahua |
| 451 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 451 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 451 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 451 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 451 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 451 | Fijo | TELMEX | Chihuahua | Chihuahua | Sauz, el |
| 451 | Fijo | TELMEX | Chihuahua | Chihuahua | Sauz, el |
| 451 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 451 | Fijo | TELMEX | Aquiles Serdán | Chihuahua | Santa eulalia |
| 451 | Fijo | TELMEX | Aquiles Serdán | Chihuahua | Santa eulalia |
| 451 | Fijo | TELMEX | Aquiles Serdán | Chihuahua | Santa eulalia |
| 451 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 451 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 452 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 453 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 454 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 455 | Fijo | TELMEX | Santa Isabel | Chihuahua | Santa isabel |
| 455 | Fijo | TELMEX | Santa Isabel | Chihuahua | Santa isabel |
| 455 | Fijo | TELMEX | Santa Isabel | Chihuahua | Santa isabel |
| 455 | Fijo | TELMEX | Satevó | Chihuahua | San francisco javier de satevo |
| 455 | Fijo | TELMEX | Satevó | Chihuahua | San francisco javier de satevo |
| 455 | Fijo | TELMEX | Riva Palacio | Chihuahua | San andres |
| 455 | Fijo | TELMEX | Riva Palacio | Chihuahua | San andres |
| 455 | Fijo | TELMEX | Riva Palacio | Chihuahua | San andres |
| 455 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 455 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 456 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 457 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 458 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 458 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 458 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 459 | Fijo | TELMEX | Aldama | Chihuahua | Juan aldama |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 459 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 460 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 461 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 462 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |
| 463 | Movil | TELCEL | Chihuahua | Chihuahua | Chihuahua |