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 |
|---|---|---|---|---|---|
| 342 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 343 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 343 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 344 | Fijo | MBT | Mazatlán | Sinaloa | Mazatlan |
| 345 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 346 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 347 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 348 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 349 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 350 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 350 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 351 | Movil | ADDINTELI | Mazatlán | Sinaloa | Mazatlan |
| 352 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 353 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 354 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 355 | Fijo | COEFICIENTE | Mazatlán | Sinaloa | Mazatlan |
| 356 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 357 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 358 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 359 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 360 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 361 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 362 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 363 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 364 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 365 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 365 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 366 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 367 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 367 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 368 | Movil | FREEDOMPOP | Mazatlán | Sinaloa | Mazatlan |
| 368 | Movil | FREEDOMPOP | Mazatlán | Sinaloa | Mazatlan |
| 368 | Movil | FREEDOMPOP | Mazatlán | Sinaloa | Mazatlan |
| 368 | Movil | FREEDOMPOP | Mazatlán | Sinaloa | Mazatlan |
| 368 | Movil | FREEDOMPOP | Mazatlán | Sinaloa | Mazatlan |
| 369 | Fijo | OPENIP | Mazatlán | Sinaloa | Castillo, el |
| 369 | Fijo | OPENIP | Mazatlán | Sinaloa | Castillo, el |
| 369 | Fijo | OPENIP | Mazatlán | Sinaloa | Castillo, el |
| 369 | Fijo | OPENIP | Mazatlán | Sinaloa | Castillo, el |
| 370 | Fijo | OPENIP | Mazatlán | Sinaloa | Mazatlan |
| 370 | Fijo | OPENIP | Mazatlán | Sinaloa | Mazatlan |
| 370 | Fijo | OPENIP | Mazatlán | Sinaloa | Mazatlan |
| 371 | Movil | VADSA | Mazatlán | Sinaloa | Mazatlan |
| 371 | Fijo | VADSA | Mazatlán | Sinaloa | Mazatlan |
| 372 | Fijo | MARCATELCOM | Mazatlán | Sinaloa | Mazatlan |
| 372 | Fijo | MARCATELCOM | Mazatlán | Sinaloa | Mazatlan |
| 373 | Fijo | TOTAL PLAY | Mazatlán | Sinaloa | Mazatlan |
| 373 | Fijo | TOTAL PLAY | Mazatlán | Sinaloa | Mazatlan |
| 374 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 374 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 375 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 376 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 377 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 378 | Movil | OMETEL | Mazatlán | Sinaloa | Mazatlan |
| 379 | Movil | ABIX | Mazatlán | Sinaloa | Mazatlan |
| 380 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 381 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 382 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 383 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 384 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 384 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 385 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 386 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 386 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 387 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 388 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 389 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 390 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 391 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 392 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 393 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 394 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 395 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 396 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 396 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 397 | Fijo | TELIGENTIA | Mazatlán | Sinaloa | Mazatlan |
| 398 | Fijo | TV CABLE | Mazatlán | Sinaloa | Mazatlan |
| 399 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 400 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 401 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 402 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 403 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 404 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 405 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 406 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 407 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 408 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 409 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 410 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 410 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 411 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 412 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 413 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 414 | Fijo | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 414 | Movil | ALTÁN | Mazatlán | Sinaloa | Mazatlan |
| 415 | Fijo | CENTERNEXT | Mazatlán | Sinaloa | Mazatlan |
| 416 | Fijo | TOTAL PLAY | Mazatlán | Sinaloa | Mazatlan |
| 417 | Fijo | TOTAL PLAY | Mazatlán | Sinaloa | Mazatlan |
| 418 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 419 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |