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 |
|---|---|---|---|---|---|
| 219 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 220 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 221 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 222 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 223 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 224 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 224 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 225 | Fijo | OPERBES | Matehuala | San Luis Potosí | Matehuala |
| 226 | Fijo | MCM | Matehuala | San Luis Potosí | Matehuala |
| 227 | Fijo | OPERBES | Matehuala | San Luis Potosí | Matehuala |
| 228 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 229 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 230 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 231 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 232 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 233 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 234 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 235 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 236 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 237 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 238 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 239 | Fijo | INBTEL | Matehuala | San Luis Potosí | Matehuala |
| 240 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 241 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 242 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 243 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 244 | Fijo | ROBOT | Matehuala | San Luis Potosí | Matehuala |
| 244 | Fijo | ROBOT | Matehuala | San Luis Potosí | Matehuala |
| 244 | Fijo | ROBOT | Matehuala | San Luis Potosí | Matehuala |
| 245 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 246 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 247 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 248 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 249 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 250 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 251 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 252 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 253 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 254 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 254 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 255 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 256 | Fijo | TELIGENTIA | Matehuala | San Luis Potosí | Matehuala |
| 257 | Movil | CORPORACIÓN NOVAVISIÓN | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 258 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 258 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 259 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 260 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 261 | Fijo | NEUROTECH | Matehuala | San Luis Potosí | Matehuala |
| 262 | Fijo | LAYER7 | Matehuala | San Luis Potosí | Matehuala |
| 263 | Movil | ALTÁN | Catorce | San Luis Potosí | Real de catorce |
| 263 | Movil | ALTÁN | Catorce | San Luis Potosí | Real de catorce |
| 264 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 265 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 266 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 267 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 268 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 268 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 269 | Fijo | OPERBES | Matehuala | San Luis Potosí | Matehuala |
| 270 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 271 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 272 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 273 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 274 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 275 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 276 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 276 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 277 | Movil | YONDER | Matehuala | San Luis Potosí | Matehuala |
| 278 | Fijo | TELECOMMERCE | Matehuala | San Luis Potosí | Matehuala |
| 279 | Fijo | CENTERNEXT | Matehuala | San Luis Potosí | Matehuala |
| 280 | Fijo | OPERBES | Matehuala | San Luis Potosí | Matehuala |
| 281 | Fijo | OPERBES | Matehuala | San Luis Potosí | Matehuala |
| 282 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 283 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 284 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 285 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 286 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 287 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 288 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 289 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 290 | Movil | VIRGIN | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 290 | Movil | VIRGIN | Matehuala | San Luis Potosí | Matehuala |
| 291 | Fijo | TELECOMMERCE HOLDING | Matehuala | San Luis Potosí | Matehuala |
| 488 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 515 | Fijo | AXTEL | Matehuala | San Luis Potosí | Matehuala |
| 593 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 593 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 593 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 593 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 596 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 596 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 596 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 596 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 598 | Fijo | TELMEX | Mier y Noriega | Nuevo León | Cardona, la |
| 688 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 688 | Fijo | TELMEX | Matehuala | San Luis Potosí | Sacramento |
| 689 | Fijo | TELMEX | Matehuala | San Luis Potosí | Santa cruz |
| 690 | Fijo | MEGACABLE | Matehuala | San Luis Potosí | Matehuala |
| 881 | Fijo | TELMEX | Villa de la Paz | San Luis Potosí | Villa de la paz |
| 881 | Fijo | TELMEX | Villa de la Paz | San Luis Potosí | Villa de la paz |
| 881 | Fijo | TELMEX | Villa de la Paz | San Luis Potosí | Villa de la paz |