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 |
|---|---|---|---|---|---|
| 269 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 270 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 271 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 272 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 273 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 274 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 275 | Fijo | MOVISTAR | Mexicali | Baja California | Mexicali |
| 276 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 276 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 277 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 278 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 279 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 280 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 281 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 282 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 283 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 284 | Fijo | AXTEL | Mexicali | Baja California | Mexicali |
| 285 | Fijo | AXTEL | Mexicali | Baja California | Mexicali |
| 286 | Fijo | AXTEL | Mexicali | Baja California | Mexicali |
| 287 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 288 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 289 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 290 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 290 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 291 | Fijo | IP MATRIX | Mexicali | Baja California | Mexicali |
| 292 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 293 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 294 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 295 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 296 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 297 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 298 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 299 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 299 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 300 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 301 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 302 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 303 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 303 | Movil | AT&T | Mexicali | Baja California | Mexicali |
| 304 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 304 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 305 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 306 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 307 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 308 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 309 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 310 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 311 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 312 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 313 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 314 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 314 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 314 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 315 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 316 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 317 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 317 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 318 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 319 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 320 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 320 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 321 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 322 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 323 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 324 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 325 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 325 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 326 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 326 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 327 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 328 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 329 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 330 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 331 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 332 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 332 | Movil | MOVISTAR | Mexicali | Baja California | Mexicali |
| 333 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 334 | Fijo | CABLEMAS | Mexicali | Baja California | Mexicali |
| 335 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 336 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 337 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 338 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 339 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 340 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 341 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 341 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 342 | Movil | TELECOMUNICACIONES 360 | Mexicali | Baja California | Mexicali |
| 342 | Movil | TELECOMUNICACIONES 360 | Mexicali | Baja California | Mexicali |
| 342 | Movil | TELECOMUNICACIONES 360 | Mexicali | Baja California | Mexicali |
| 343 | Movil | IBO CELL | Mexicali | Baja California | Mexicali |
| 344 | Movil | QBOCEL | Mexicali | Baja California | Mexicali |
| 345 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 346 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 347 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 348 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 349 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 350 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 351 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 352 | Movil | TELCEL | Mexicali | Baja California | Mexicali |
| 353 | Movil | TELCEL | Mexicali | Baja California | Mexicali |