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 |
|---|---|---|---|---|---|
| 638 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 638 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 638 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 638 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 639 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 640 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 641 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 642 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 643 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 644 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 645 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 646 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 647 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 648 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 648 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 648 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 648 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 648 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 648 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 649 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 650 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 650 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 650 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 650 | Fijo | TELNOR | Ensenada | Baja California | Puertecitos |
| 650 | Fijo | TELNOR | Ensenada | Baja California | Bahia de los angeles |
| 650 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 651 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 652 | Fijo | CABLEMAS | Tijuana | Baja California | Tijuana |
| 653 | Fijo | CABLEMAS | Tijuana | Baja California | Tijuana |
| 654 | Movil | CELMAX | Tijuana | Baja California | Tijuana |
| 654 | Fijo | MAXCOM | Tijuana | Baja California | Tijuana |
| 655 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 656 | Fijo | TOTAL PLAY | Tijuana | Baja California | Tijuana |
| 657 | Fijo | DIRECTO | Tijuana | Baja California | Tijuana |
| 657 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 658 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 658 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 659 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 660 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 661 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 662 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 663 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 663 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 663 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 664 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 665 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 666 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 667 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 668 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 669 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 670 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 671 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 672 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 673 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 673 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 674 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 674 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 675 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 676 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 677 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 678 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 679 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 680 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 680 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 680 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 680 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 680 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 680 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 680 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 681 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 681 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 681 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 681 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 682 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 682 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 682 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 682 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 682 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 683 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 683 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 683 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |
| 683 | Fijo | TELNOR | Tijuana | Baja California | Tijuana |