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 |
|---|---|---|---|---|---|
| 805 | Movil | YONDER | Chihuahua | Chihuahua | Chihuahua |
| 806 | Fijo | CABLEMAS | Chihuahua | Chihuahua | Chihuahua |
| 806 | Fijo | CABLEMAS | Chihuahua | Chihuahua | Chihuahua |
| 806 | Fijo | CABLEMAS | Chihuahua | Chihuahua | Chihuahua |
| 807 | Fijo | MEGACABLE | Chihuahua | Chihuahua | Chihuahua |
| 808 | Movil | TALENTO NET | Chihuahua | Chihuahua | Chihuahua |
| 809 | Fijo | IMPULSORA BALDER | Chihuahua | Chihuahua | Chihuahua |
| 810 | Fijo | SPARKTELECOMM | Chihuahua | Chihuahua | Chihuahua |
| 811 | Fijo | SPARKTELECOMM | Chihuahua | Chihuahua | Chihuahua |
| 812 | Fijo | ROBOT | Chihuahua | Chihuahua | Chihuahua |
| 812 | Fijo | ROBOT | Chihuahua | Chihuahua | Sauz, el |
| 813 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 814 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 815 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 816 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 817 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 818 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 819 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 820 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 821 | Movil | VIRGIN | Aldama | Chihuahua | Juan aldama |
| 821 | Movil | VIRGIN | Chihuahua | Chihuahua | Chihuahua |
| 822 | Fijo | SPARKTELECOMM | Chihuahua | Chihuahua | Chihuahua |
| 823 | Fijo | CABLEMAS | Chihuahua | Chihuahua | Chihuahua |
| 824 | Fijo | JAPIFON | Chihuahua | Chihuahua | Chihuahua |
| 825 | Fijo | SPARKTELECOMM | Chihuahua | Chihuahua | Chihuahua |
| 826 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 827 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 828 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 829 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 830 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 831 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 832 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 833 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 834 | Fijo | OPENIP | Chihuahua | Chihuahua | Sauz, el |
| 835 | Fijo | SPARKTELECOMM | Chihuahua | Chihuahua | Chihuahua |
| 888 | Fijo | MARCATELCOM | Chihuahua | Chihuahua | Chihuahua |
| 893 | Fijo | AVANTEL | Chihuahua | Chihuahua | Chihuahua |
| 893 | Fijo | AVANTEL | Chihuahua | Chihuahua | Chihuahua |
| 893 | Fijo | AVANTEL | Chihuahua | Chihuahua | Chihuahua |
| 893 | Fijo | AVANTEL | Chihuahua | Chihuahua | Chihuahua |
| 893 | Fijo | AVANTEL | Chihuahua | Chihuahua | Chihuahua |
| 980 | Fijo | MCM | Chihuahua | Chihuahua | Chihuahua |
| 980 | Fijo | MCM | Chihuahua | Chihuahua | Chihuahua |
| 980 | Fijo | MCM | Chihuahua | Chihuahua | Chihuahua |
| 980 | Fijo | MCM | Chihuahua | Chihuahua | Chihuahua |
| 980 | Fijo | MCM | Chihuahua | Chihuahua | Chihuahua |
| 980 | Fijo | MCM | Chihuahua | Chihuahua | Chihuahua |
| 980 | Fijo | MCM | Chihuahua | Chihuahua | Chihuahua |