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 |
|---|---|---|---|---|---|
| 238 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 239 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 240 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 240 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 241 | Movil | ABIX | San Luis Río Colorado | Sonora | San luis rio colorado |
| 242 | Fijo | MCM | San Luis Río Colorado | Sonora | San luis rio colorado |
| 243 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 244 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 245 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 246 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 247 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 247 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 248 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 249 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 249 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 250 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 251 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 251 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 252 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 253 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 254 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 255 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 256 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 257 | Fijo | IP MATRIX | Mexicali | Baja California | Ej. doctor alberto oviedo mota (el indiviso) |
| 258 | Movil | TELCEL | San Luis Río Colorado | Sonora | San luis rio colorado |
| 259 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 260 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 261 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 262 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 263 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 264 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 265 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 266 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 267 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 268 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 269 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 270 | Fijo | INBTEL | San Luis Río Colorado | Sonora | San luis rio colorado |
| 271 | Fijo | TELIGENTIA | San Luis Río Colorado | Sonora | San luis rio colorado |
| 271 | Fijo | TELIGENTIA | San Luis Río Colorado | Sonora | San luis rio colorado |
| 272 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 272 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 272 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 272 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 273 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 273 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 274 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 275 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 276 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 277 | Movil | MEGACABLE | San Luis Río Colorado | Sonora | San luis rio colorado |
| 277 | Fijo | MEGACABLE | San Luis Río Colorado | Sonora | San luis rio colorado |
| 277 | Fijo | MEGACABLE | San Luis Río Colorado | Sonora | San luis rio colorado |
| 278 | Fijo | NGX NETWORKS | San Luis Río Colorado | Sonora | San luis rio colorado |
| 279 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 279 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 280 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 281 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 282 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 283 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 284 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 285 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 286 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 287 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 288 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 289 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 290 | Fijo | OPERBES | San Luis Río Colorado | Sonora | San luis rio colorado |
| 291 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 291 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 291 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 292 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 293 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 293 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 294 | Fijo | LAYER7 | San Luis Río Colorado | Sonora | San luis rio colorado |
| 295 | Movil | ALTÁN | San Luis Río Colorado | Sonora | San luis rio colorado |
| 295 | Movil | ALTÁN | San Luis Río Colorado | Sonora | San luis rio colorado |
| 296 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 297 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 298 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 299 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 300 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 301 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 302 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 302 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 303 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 303 | Fijo | CABLEVISIONRED | San Luis Río Colorado | Sonora | San luis rio colorado |
| 304 | Fijo | ROBOT | San Luis Río Colorado | Sonora | San luis rio colorado |
| 304 | Fijo | ROBOT | San Luis Río Colorado | Sonora | San luis rio colorado |
| 305 | Fijo | TELECOMMERCE | San Luis Río Colorado | Sonora | San luis rio colorado |
| 306 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 307 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 308 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 309 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 310 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 311 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 312 | Movil | AT&T | San Luis Río Colorado | Sonora | San luis rio colorado |
| 313 | Movil | VIRGIN | San Luis Río Colorado | Sonora | San luis rio colorado |
| 314 | Fijo | TELECOMMERCE HOLDING | San Luis Río Colorado | Sonora | San luis rio colorado |
| 315 | Fijo | CENTERNEXT | San Luis Río Colorado | Sonora | San luis rio colorado |
| 488 | Fijo | TELNOR | San Luis Río Colorado | Sonora | Ingeniero luis b. sanchez |
| 515 | Fijo | TELNOR | Mexicali | Baja California | Ej. doctor alberto oviedo mota (el indiviso) |
| 515 | Fijo | TELNOR | San Luis Río Colorado | Sonora | Ingeniero luis b. sanchez |