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 |
|---|---|---|---|---|---|
| 881 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 881 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 881 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 881 | Fijo | TELMEX | Matehuala | San Luis Potosí | Tanque colorado |
| 881 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 881 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 881 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 881 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion wadley |
| 882 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 882 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 882 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 882 | Fijo | TELMEX | Catorce | San Luis Potosí | Estacion catorce |
| 882 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 882 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 882 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 883 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 883 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 883 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 883 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 883 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 884 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 884 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 884 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 885 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 885 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 885 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 885 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 885 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 885 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 886 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 886 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 886 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 886 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 886 | Movil | AT&T | Matehuala | San Luis Potosí | Matehuala |
| 887 | Fijo | TELMEX | Cedral | San Luis Potosí | Cedral |
| 887 | Fijo | TELMEX | Cedral | San Luis Potosí | Cedral |
| 887 | Fijo | TELMEX | Cedral | San Luis Potosí | Cedral |
| 887 | Fijo | TELMEX | Mier y Noriega | Nuevo León | Mier y noriega |
| 887 | Fijo | TELMEX | Mier y Noriega | Nuevo León | Mier y noriega |
| 887 | Fijo | TELMEX | Vanegas | San Luis Potosí | Vanegas |
| 887 | Fijo | TELMEX | Vanegas | San Luis Potosí | Vanegas |
| 887 | Fijo | TELMEX | Catorce | San Luis Potosí | Real de catorce |
| 887 | Fijo | TELMEX | Catorce | San Luis Potosí | Real de catorce |
| 887 | Fijo | TELMEX | Catorce | San Luis Potosí | Real de catorce |
| 887 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 887 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 887 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 887 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 887 | Fijo | TELMEX | Matehuala | San Luis Potosí | Matehuala |
| 888 | Fijo | TELMEX | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 888 | Fijo | TELMEX | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 888 | Fijo | TELMEX | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 888 | Fijo | TELMEX | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 889 | Movil | TELCEL | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 889 | Movil | TELCEL | Doctor Arroyo | Nuevo León | Doctor arroyo |
| 889 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 889 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 889 | Movil | TELCEL | Matehuala | San Luis Potosí | Matehuala |
| 889 | Movil | TELCEL | Doctor Arroyo | Nuevo León | Doctor arroyo |