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 |
|---|---|---|---|---|---|
| 660 | Movil | CELMAX | Chihuahua | Chihuahua | Chihuahua |
| 660 | Movil | CELMAX | Chihuahua | Chihuahua | Chihuahua |
| 661 | Fijo | TOTAL PLAY | Chihuahua | Chihuahua | Chihuahua |
| 662 | Movil | Chihuahua | Chihuahua | Chihuahua | |
| 663 | Fijo | TOTAL PLAY | Chihuahua | Chihuahua | Chihuahua |
| 664 | Fijo | OPENIP | Chihuahua | Chihuahua | Chihuahua |
| 664 | Fijo | OPENIP | Aldama | Chihuahua | Juan aldama |
| 664 | Fijo | OPENIP | Chihuahua | Chihuahua | Sauz, el |
| 664 | Fijo | OPENIP | Chihuahua | Chihuahua | Chihuahua |
| 664 | Fijo | OPENIP | Chihuahua | Chihuahua | Sauz, el |
| 664 | Fijo | OPENIP | Aldama | Chihuahua | Juan aldama |
| 664 | Fijo | OPENIP | Chihuahua | Chihuahua | Chihuahua |
| 664 | Fijo | OPENIP | Aldama | Chihuahua | Juan aldama |
| 665 | Movil | CABLEVISIONRED | Chihuahua | Chihuahua | Chihuahua |
| 665 | Movil | CABLEVISIONRED | Chihuahua | Chihuahua | Chihuahua |
| 665 | Movil | CABLEVISIONRED | Chihuahua | Chihuahua | Sauz, el |
| 665 | Movil | CABLEVISIONRED | Chihuahua | Chihuahua | Terrazas estacion f.f.c.c. |
| 666 | Movil | VADSA | Chihuahua | Chihuahua | Chihuahua |
| 666 | Fijo | VADSA | Chihuahua | Chihuahua | Chihuahua |
| 667 | Fijo | CABLEMAS | Chihuahua | Chihuahua | Chihuahua |
| 668 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 668 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 669 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 670 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 671 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 672 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 673 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 673 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 674 | Fijo | TOTAL PLAY | Chihuahua | Chihuahua | Chihuahua |
| 675 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 675 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 676 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 677 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 678 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 679 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 680 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 681 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 682 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 683 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 684 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 685 | Movil | ALTÁN | Chihuahua | Chihuahua | Chihuahua |
| 686 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 686 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 687 | Movil | OMETEL | Chihuahua | Chihuahua | Chihuahua |
| 688 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 688 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 688 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 688 | Fijo | TELMEX | Aquiles Serdán | Chihuahua | Santa eulalia |
| 688 | Fijo | TELMEX | Chihuahua | Chihuahua | Sauz, el |
| 688 | Fijo | TELMEX | Santa Isabel | Chihuahua | San miguel de los anchondo |
| 689 | Fijo | TELMEX | Chihuahua | Chihuahua | Chihuahua |
| 690 | Fijo | MEGACABLE | Chihuahua | Chihuahua | Chihuahua |
| 691 | Fijo | TOTAL PLAY | Chihuahua | Chihuahua | Chihuahua |
| 692 | Movil | ABIX | Chihuahua | Chihuahua | Chihuahua |
| 693 | Fijo | TOTAL PLAY | Chihuahua | Chihuahua | Chihuahua |
| 694 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 695 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 695 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 696 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 697 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 698 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 699 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 700 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 701 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 702 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 703 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 704 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 705 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 705 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 706 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 707 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 707 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 708 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 709 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 710 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 711 | Movil | FREEDOMPOP | Chihuahua | Chihuahua | Chihuahua |
| 712 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 713 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 714 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 715 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 716 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 717 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 718 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 719 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 720 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 721 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 721 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 722 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 723 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 724 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 724 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 725 | Fijo | CENTERNEXT | Chihuahua | Chihuahua | Chihuahua |
| 726 | Movil | IENTC | Chihuahua | Chihuahua | Chihuahua |
| 727 | Fijo | TOTAL PLAY | Chihuahua | Chihuahua | Chihuahua |
| 728 | Fijo | CABLEMAS | Chihuahua | Chihuahua | Chihuahua |
| 729 | Fijo | TOTAL PLAY | Chihuahua | Chihuahua | Chihuahua |
| 730 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 730 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 730 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |
| 731 | Movil | AT&T | Chihuahua | Chihuahua | Chihuahua |