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 |
|---|---|---|---|---|---|
| 709 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 710 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 711 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 712 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 713 | Fijo | CENTERNEXT | Mexicali | Baja California | Mexicali |
| 714 | Fijo | TOTAL PLAY | Mexicali | Baja California | Mexicali |
| 714 | Fijo | TOTAL PLAY | Mexicali | Baja California | Mexicali |
| 715 | Fijo | TOTAL PLAY | Mexicali | Baja California | Mexicali |
| 715 | Fijo | TOTAL PLAY | Mexicali | Baja California | Mexicali |
| 716 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 717 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 718 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 718 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 719 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 719 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 720 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 721 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 722 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 723 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 724 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 725 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 726 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 727 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 728 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 729 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 730 | Fijo | INBTEL | Mexicali | Baja California | Mexicali |
| 731 | Fijo | TOTAL PLAY | Mexicali | Baja California | Mexicali |
| 731 | Fijo | TOTAL PLAY | Mexicali | Baja California | Mexicali |
| 732 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 732 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 733 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 733 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 733 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 734 | Movil | FREEDOMPOP | Mexicali | Baja California | Mexicali |
| 734 | Movil | FREEDOMPOP | Mexicali | Baja California | Mexicali |
| 735 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 735 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 736 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 737 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 738 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 739 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 739 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 740 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 741 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 741 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 742 | Movil | MEGACABLE | Mexicali | Baja California | Benito juarez (tecolotes, ejido campeche) |
| 742 | Movil | MEGACABLE | Mexicali | Baja California | Mexicali |
| 742 | Fijo | MEGACABLE | Mexicali | Baja California | Mexicali |
| 742 | Fijo | MEGACABLE | Mexicali | Baja California | Mexicali |
| 743 | Fijo | ROBOT | Mexicali | Baja California | Mexicali |
| 743 | Fijo | ROBOT | Mexicali | Baja California | San felipe |
| 743 | Fijo | ROBOT | Mexicali | Baja California | San felipe |
| 743 | Fijo | ROBOT | Mexicali | Baja California | Mexicali |
| 743 | Fijo | ROBOT | Mexicali | Baja California | Mexicali |
| 743 | Fijo | ROBOT | Mexicali | Baja California | San felipe |
| 743 | Fijo | ROBOT | Mexicali | Baja California | Mexicali |
| 744 | Fijo | NGX NETWORKS | Mexicali | Baja California | Mexicali |
| 745 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 745 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 746 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 746 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 746 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 747 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 748 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 749 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 750 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 751 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 752 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 753 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 754 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 755 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 756 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 757 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 758 | Movil | CORPORACIÓN NOVAVISIÓN | Mexicali | Baja California | Mexicali |
| 759 | Movil | FREEDOMPOP | Mexicali | Baja California | Mexicali |
| 760 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 760 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 760 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 761 | Movil | ALTÁN | Mexicali | Baja California | Mexicali |
| 762 | Movil | ALTÁN | Mexicali | Baja California | Mexicali |
| 763 | Movil | ALTÁN | Mexicali | Baja California | Mexicali |
| 763 | Movil | ALTÁN | Mexicali | Baja California | Mexicali |
| 764 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 765 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 766 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 767 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 768 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 768 | Movil | OXIO | Mexicali | Baja California | Mexicali |
| 769 | Fijo | TOTAL PLAY | Mexicali | Baja California | Mexicali |
| 770 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 770 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 770 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 771 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 771 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 771 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 772 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 773 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 774 | Fijo | NEUROTECH | Mexicali | Baja California | Mexicali |
| 775 | Fijo | LAYER7 | Mexicali | Baja California | Mexicali |
| 776 | Movil | FREEDOMPOP | Mexicali | Baja California | Mexicali |