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 |
|---|---|---|---|---|---|
| 283 | Movil | CELMAX | Celaya | Guanajuato | Celaya |
| 284 | Fijo | IP MATRIX | Celaya | Guanajuato | Celaya |
| 285 | Fijo | IENTC | Celaya | Guanajuato | Celaya |
| 285 | Movil | IENTC | Celaya | Guanajuato | Celaya |
| 286 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 287 | Fijo | TOTAL PLAY | Celaya | Guanajuato | Celaya |
| 288 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 289 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 290 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 291 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 292 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 293 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 294 | Movil | NEUS | Celaya | Guanajuato | Celaya |
| 295 | Fijo | TOTAL PLAY | Celaya | Guanajuato | Celaya |
| 296 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 297 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 298 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 299 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 299 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 300 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 301 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 302 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 303 | Fijo | TOTAL PLAY | Celaya | Guanajuato | Celaya |
| 304 | Fijo | TOTAL PLAY | Celaya | Guanajuato | Celaya |
| 305 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 306 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 307 | Fijo | TV REY | Celaya | Guanajuato | Celaya |
| 308 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 309 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 310 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 311 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 312 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 313 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 314 | Fijo | UC TELECOM | Celaya | Guanajuato | Celaya |
| 314 | Fijo | UC TELECOM | Celaya | Guanajuato | Celaya |
| 315 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 316 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 317 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 318 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 319 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 319 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 320 | Movil | QBOCEL | Celaya | Guanajuato | Celaya |
| 321 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 322 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 322 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 323 | Fijo | CONVERGIA | Celaya | Guanajuato | Celaya |
| 324 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 325 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 326 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 327 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 327 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 328 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 329 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 330 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 330 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 331 | Fijo | DIALOGA | Celaya | Guanajuato | Celaya |
| 332 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 332 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 333 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 333 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 334 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 335 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 336 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 337 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 337 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 338 | Fijo | SERVNET | Celaya | Guanajuato | Celaya |
| 339 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 340 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 340 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 341 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 342 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 343 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 344 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 345 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 346 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 346 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 347 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 347 | Fijo | ALTÁN | Celaya | Guanajuato | Celaya |
| 347 | Movil | ALTÁN | Celaya | Guanajuato | Celaya |
| 348 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 349 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 350 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 351 | Fijo | ALTATA | Celaya | Guanajuato | Celaya |
| 352 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 353 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 354 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 354 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 355 | Fijo | DIRECTO | Celaya | Guanajuato | Palmita, la (la palmita de san gabriel) |
| 355 | Fijo | DIRECTO | Celaya | Guanajuato | Palmita, la (la palmita de san gabriel) |
| 356 | Movil | SERVITRON | Celaya | Guanajuato | Celaya |
| 357 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 358 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 359 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 360 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 360 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 361 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 362 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 363 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 364 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 365 | Movil | AT&T | Celaya | Guanajuato | Celaya |