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 |
|---|---|---|---|---|---|
| 274 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 275 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 276 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 277 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 278 | Movil | MOVISTAR | Tijuana | Baja California | Tijuana |
| 279 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 280 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 281 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 282 | Fijo | AVANTEL | Tijuana | Baja California | Tijuana |
| 282 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 283 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 284 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 285 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 286 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 287 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 288 | Fijo | ALESTRA | Tijuana | Baja California | Tijuana |
| 289 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 290 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 291 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 292 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 293 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 294 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 295 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 296 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 296 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 297 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 298 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 299 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 300 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 301 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 302 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 303 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 304 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 305 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 306 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 307 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 308 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 309 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 310 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 311 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 312 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 313 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 314 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 315 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 316 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 317 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 318 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 319 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 320 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 321 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 322 | Fijo | STARTEL | Tijuana | Baja California | Tijuana |
| 322 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 323 | Fijo | G-TEL | Tijuana | Baja California | Tijuana |
| 324 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 325 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 326 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 327 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 328 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 329 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 330 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 331 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 332 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 332 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 333 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 334 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 335 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 336 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 337 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 338 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 339 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 340 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 341 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 342 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 343 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 344 | Fijo | AXTEL | Tijuana | Baja California | Tijuana |
| 345 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 346 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 347 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 348 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 349 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 350 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 351 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 352 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 353 | Movil | AT&T | Tijuana | Baja California | Tijuana |
| 354 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 355 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 356 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 357 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 358 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 359 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 360 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 361 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 362 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 363 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 364 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 365 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 366 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 367 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 368 | Movil | TELCEL | Tijuana | Baja California | Tijuana |
| 368 | Movil | TELCEL | Tijuana | Baja California | Tijuana |