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 |
|---|---|---|---|---|---|
| 654 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 655 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 656 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 657 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 658 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 659 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 660 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 661 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 662 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 662 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 663 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 664 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 665 | Fijo | TELECOMMERCE | Tampico | Tamaulipas | Tampico |
| 666 | Fijo | CL3ARCOM | Tampico | Tamaulipas | Tampico |
| 666 | Fijo | CL3ARCOM | Tampico | Tamaulipas | Tampico |
| 667 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 668 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 668 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 669 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 670 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 671 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 672 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 673 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 674 | Fijo | CENTERNEXT | Tampico | Tamaulipas | Tampico |
| 674 | Fijo | CENTERNEXT | Altamira | Tamaulipas | Altamira |
| 675 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 675 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 676 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 677 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 678 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 679 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 680 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 681 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 682 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 683 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 684 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 685 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 686 | Fijo | CABLEVISIONRED | Altamira | Tamaulipas | Altamira |
| 686 | Fijo | CABLEVISIONRED | Altamira | Tamaulipas | Altamira |
| 687 | Fijo | TELIGENTIA | Tampico | Tamaulipas | Tampico |
| 687 | Fijo | TELIGENTIA | Tampico | Tamaulipas | Tampico |
| 688 | Fijo | TELMEX | Tampico | Tamaulipas | Tampico |
| 688 | Fijo | TELMEX | Pueblo Viejo | Veracruz de Ignacio de la Llave | Crucero, el (estacion pedernales) |
| 688 | Fijo | TELMEX | Tampico Alto | Veracruz de Ignacio de la Llave | Chacas, las |
| 688 | Fijo | TELMEX | Pueblo Viejo | Veracruz de Ignacio de la Llave | Cd. cuauhtemoc |
| 688 | Fijo | TELMEX | Pueblo Viejo | Veracruz de Ignacio de la Llave | Vuelta del barco |
| 689 | Fijo | TELMEX | Pueblo Viejo | Veracruz de Ignacio de la Llave | Cd. cuauhtemoc |
| 690 | Fijo | MEGACABLE | Altamira | Tamaulipas | Altamira |
| 691 | Fijo | DIGITAL COMUNICATIONS | Tampico | Tamaulipas | Tampico |
| 692 | Fijo | EL PODER DE INTERNET | Tampico | Tamaulipas | Tampico |
| 693 | Fijo | VOZTELECOM | Tampico | Tamaulipas | Tampico |
| 694 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 694 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 694 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 695 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 696 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 696 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 697 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 698 | Movil | ESMERO | Tampico | Tamaulipas | Tampico |
| 699 | Movil | FREEDOMPOP | Tampico | Tamaulipas | Tampico |
| 699 | Movil | FREEDOMPOP | Tampico | Tamaulipas | Tampico |
| 699 | Movil | FREEDOMPOP | Tampico | Tamaulipas | Tampico |
| 700 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 700 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 701 | Fijo | CABLEVISIONRED | Altamira | Tamaulipas | Altamira |
| 701 | Fijo | CABLEVISIONRED | Altamira | Tamaulipas | Altamira |
| 702 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 702 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 703 | Fijo | ROBOT | Altamira | Tamaulipas | Altamira |
| 703 | Fijo | ROBOT | Ciudad Madero | Tamaulipas | Ciudad madero |
| 703 | Fijo | ROBOT | Tampico | Tamaulipas | Tampico |
| 703 | Fijo | ROBOT | Altamira | Tamaulipas | Altamira |
| 703 | Fijo | ROBOT | Tampico | Tamaulipas | Tampico |
| 703 | Fijo | ROBOT | Altamira | Tamaulipas | Altamira |
| 703 | Fijo | ROBOT | Ciudad Madero | Tamaulipas | Ciudad madero |
| 703 | Fijo | ROBOT | Tampico | Tamaulipas | Tampico |
| 704 | Movil | MEGACABLE | Ciudad Madero | Tamaulipas | Ciudad madero |
| 704 | Movil | MEGACABLE | Tampico | Tamaulipas | Tampico |
| 705 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 705 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 706 | Fijo | CABLEVISIONRED | Altamira | Tamaulipas | Altamira |
| 706 | Fijo | CABLEVISIONRED | Tampico | Tamaulipas | Tampico |
| 707 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 707 | Fijo | TOTAL PLAY | Tampico | Tamaulipas | Tampico |
| 708 | Fijo | CABLEVISIONRED | Tampico | Tamaulipas | Tampico |
| 708 | Fijo | CABLEVISIONRED | Tampico | Tamaulipas | Tampico |
| 708 | Fijo | CABLEVISIONRED | Tampico | Tamaulipas | Tampico |
| 709 | Fijo | SERVICE TRENDS | Tampico | Tamaulipas | Tampico |
| 710 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 711 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 712 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 713 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 714 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 715 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 716 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 717 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 718 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 719 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 719 | Movil | AT&T | Tampico | Tamaulipas | Tampico |
| 720 | Movil | AT&T | Tampico | Tamaulipas | Tampico |