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 |
|---|---|---|---|---|---|
| 519 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 520 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 521 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 522 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 523 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 524 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 525 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 526 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 527 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 528 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 529 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 530 | Fijo | INBTEL | Celaya | Guanajuato | Celaya |
| 531 | Fijo | TELIGENTIA | Celaya | Guanajuato | Celaya |
| 531 | Fijo | TELIGENTIA | Celaya | Guanajuato | Celaya |
| 532 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 533 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 534 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 535 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 536 | Movil | MEGACABLE | Celaya | Guanajuato | San juan de la vega |
| 536 | Movil | MEGACABLE | Celaya | Guanajuato | Celaya |
| 536 | Fijo | MEGACABLE | Celaya | Guanajuato | Celaya |
| 536 | Fijo | MEGACABLE | Celaya | Guanajuato | Celaya |
| 536 | Fijo | MEGACABLE | Celaya | Guanajuato | Celaya |
| 537 | Fijo | ROBOT | Celaya | Guanajuato | Celaya |
| 537 | Fijo | ROBOT | Celaya | Guanajuato | Celaya |
| 537 | Fijo | ROBOT | Celaya | Guanajuato | Celaya |
| 537 | Fijo | ROBOT | Celaya | Guanajuato | Celaya |
| 538 | Fijo | NGX NETWORKS | Celaya | Guanajuato | Celaya |
| 539 | Fijo | TOTAL PLAY | Celaya | Guanajuato | Celaya |
| 540 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 541 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 542 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 543 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 544 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 545 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 546 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 547 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 548 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 549 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 550 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 550 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 551 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 552 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 552 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 553 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 554 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 555 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 555 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 556 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 557 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 557 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 558 | Fijo | NEUROTECH | Celaya | Guanajuato | Celaya |
| 559 | Fijo | LAYER7 | Celaya | Guanajuato | Celaya |
| 560 | Fijo | FLYNODE | Celaya | Guanajuato | Celaya |
| 561 | Fijo | MEGACABLE | Celaya | Guanajuato | Celaya |
| 561 | Fijo | MEGACABLE | Celaya | Guanajuato | San juan de la vega |
| 561 | Fijo | MEGACABLE | Celaya | Guanajuato | Celaya |
| 562 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 563 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 564 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 565 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 566 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 566 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 567 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 568 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 568 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 569 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 570 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 571 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 572 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 573 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 574 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 575 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 575 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 576 | Fijo | TELECOMMERCE | Celaya | Guanajuato | Celaya |
| 577 | Fijo | ARDO | Celaya | Guanajuato | Celaya |
| 578 | Fijo | SPARKTELECOMM | Celaya | Guanajuato | Celaya |
| 578 | Fijo | SPARKTELECOMM | Celaya | Guanajuato | Celaya |
| 578 | Fijo | SPARKTELECOMM | Celaya | Guanajuato | Celaya |
| 578 | Fijo | SPARKTELECOMM | Celaya | Guanajuato | Celaya |
| 579 | Movil | YONDER | Celaya | Guanajuato | Celaya |
| 580 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 581 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 582 | Fijo | MEGACABLE | Celaya | Guanajuato | Celaya |
| 582 | Fijo | MEGACABLE | Celaya | Guanajuato | San juan de la vega |
| 583 | Fijo | SPARKTELECOMM | Celaya | Guanajuato | Celaya |
| 584 | Fijo | SPARKTELECOMM | Celaya | Guanajuato | Celaya |
| 585 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 586 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 587 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 588 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 589 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 590 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 591 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 592 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 593 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 593 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 593 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 594 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 595 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |