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 |
|---|---|---|---|---|---|
| 100 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 100 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 100 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 100 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 100 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 100 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 101 | Movil | MOVISTAR | Petatlán | Guerrero | Petatlan |
| 101 | Movil | MOVISTAR | Petatlán | Guerrero | Petatlan |
| 102 | Movil | MOVISTAR | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 103 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 104 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 104 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 104 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 105 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 105 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 105 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 105 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 106 | Fijo | MOVISTAR | Petatlán | Guerrero | Petatlan |
| 107 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 107 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 107 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 108 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 108 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 108 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 109 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 109 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 110 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 110 | Movil | TELCEL | Petatlán | Guerrero | Petatlan |
| 111 | Fijo | DIRECTO | Petatlán | Guerrero | Petatlan |
| 111 | Fijo | DIRECTO | Petatlán | Guerrero | Petatlan |
| 112 | Movil | SERVITRON | Petatlán | Guerrero | Petatlan |
| 113 | Fijo | UC TELECOM | Petatlán | Guerrero | Petatlan |
| 114 | Fijo | TV REY | Petatlán | Guerrero | Petatlan |
| 115 | Fijo | COEFICIENTE | Petatlán | Guerrero | Petatlan |
| 116 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 116 | Fijo | ALTÁN | Petatlán | Guerrero | Petatlan |
| 117 | Movil | FREEDOMPOP | Petatlán | Guerrero | Petatlan |
| 118 | Movil | MEGACABLE | Petatlán | Guerrero | Palos blancos |
| 118 | Movil | MEGACABLE | Petatlán | Guerrero | Petatlan |
| 118 | Fijo | MEGACABLE | Petatlán | Guerrero | Petatlan |
| 119 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 119 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 120 | Fijo | OPERBES | Petatlán | Guerrero | Palos blancos |
| 121 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 121 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 122 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 122 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 123 | Movil | VIRGIN | Petatlán | Guerrero | Petatlan |
| 124 | Fijo | CENTERNEXT | Petatlán | Guerrero | Petatlan |
| 125 | Fijo | INBTEL | Petatlán | Guerrero | Petatlan |
| 126 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 127 | Movil | ALTÁN | Petatlán | Guerrero | Petatlan |
| 128 | Fijo | TELIGENTIA | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Mesas, las |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Petatlan |
| 538 | Fijo | TELMEX | Petatlán | Guerrero | Mesas, las |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 544 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 596 | Fijo | TELMEX | Petatlán | Guerrero | San jeronimito (san jeronimo) |
| 688 | Fijo | TELMEX | Petatlán | Guerrero | Mameyal, el |
| 688 | Fijo | TELMEX | Petatlán | Guerrero | Coyuquilla sur (coyuquilla viejo) |
| 689 | Fijo | TELMEX | Petatlán | Guerrero | Palos blancos |
| 690 | Fijo | MEGACABLE | Petatlán | Guerrero | Petatlan |