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 |
|---|---|---|---|---|---|
| 498 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 499 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 500 | Fijo | ALESTRA | Mazatlán | Sinaloa | Mazatlan |
| 501 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 502 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 503 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 504 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 505 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 506 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 507 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 508 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 509 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 510 | Movil | VIRGIN | Mazatlán | Sinaloa | Mazatlan |
| 511 | Fijo | SPARKTELECOMM | Mazatlán | Sinaloa | Mazatlan |
| 512 | Fijo | JAPIFON | Mazatlán | Sinaloa | Mazatlan |
| 513 | Fijo | SPARKTELECOMM | Mazatlán | Sinaloa | Mazatlan |
| 514 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 515 | Fijo | AXTEL | Mazatlán | Sinaloa | Mazatlan |
| 516 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 517 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 518 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 519 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 520 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 521 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 522 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 523 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 524 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 525 | Fijo | ROBOT | Mazatlán | Sinaloa | Castillo, el |
| 526 | Fijo | SPARKTELECOMM | Mazatlán | Sinaloa | Mazatlan |
| 533 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 593 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 593 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 596 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 668 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 669 | Fijo | BESTPHONE | Mazatlán | Sinaloa | Mazatlan |
| 670 | Fijo | BESTPHONE | Mazatlán | Sinaloa | Mazatlan |
| 688 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 688 | Fijo | TELMEX | Mazatlán | Sinaloa | San marcos |
| 688 | Fijo | TELMEX | Mazatlán | Sinaloa | Noria de san antonio, la (la noria) |
| 688 | Fijo | TELMEX | Mazatlán | Sinaloa | San francisquito |
| 689 | Fijo | TELMEX | Mazatlán | Sinaloa | Roble, el |
| 690 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 800 | Fijo | ALESTRA | Mazatlán | Sinaloa | Mazatlan |
| 910 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 910 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 910 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 910 | Fijo | TELMEX | Mazatlán | Sinaloa | Recodo, el |
| 910 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 911 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 912 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 912 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 912 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 912 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 912 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 913 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 914 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 915 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 915 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 916 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 916 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 916 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Castillo, el |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Castillo, el |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Castillo, el |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Castillo, el |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Castillo, el |
| 917 | Fijo | TELMEX | Mazatlán | Sinaloa | Castillo, el |
| 918 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 919 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 920 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 921 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 922 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 922 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 923 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 924 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 925 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 926 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 927 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 928 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 928 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 929 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 929 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 929 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 929 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 930 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 930 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 930 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 930 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 930 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 931 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 932 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 933 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 940 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 940 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 940 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 940 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 940 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 940 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |