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 |
|---|---|---|---|---|---|
| 151 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 151 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 152 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 153 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 153 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 154 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 155 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 156 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 156 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 157 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 158 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 158 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 159 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 160 | Fijo | VINOC | San José Iturbide | Guanajuato | San jose iturbide |
| 161 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 162 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 163 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 164 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 165 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 166 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 167 | Fijo | TOTAL PLAY | San José Iturbide | Guanajuato | San jose iturbide |
| 168 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 169 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 170 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 171 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 172 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 173 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 174 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 175 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 176 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 177 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 178 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 179 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 179 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 180 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 181 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 182 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 183 | Fijo | COEFICIENTE | Colón | Querétaro | Colon |
| 184 | Movil | ALTÁN | San José Iturbide | Guanajuato | San jose iturbide |
| 184 | Fijo | ALTÁN | San José Iturbide | Guanajuato | San jose iturbide |
| 185 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 186 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 186 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 187 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 188 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 189 | Movil | FREEDOMPOP | San José Iturbide | Guanajuato | San jose iturbide |
| 190 | Fijo | MARCATELCOM | San José Iturbide | Guanajuato | San jose iturbide |
| 191 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 191 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 191 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 191 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 191 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 191 | Movil | TELCEL | San José Iturbide | Guanajuato | San jose iturbide |
| 192 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 193 | Fijo | TELMEX | Doctor Mora | Guanajuato | Doctor mora |
| 193 | Fijo | TELMEX | Doctor Mora | Guanajuato | Doctor mora |
| 193 | Fijo | TELMEX | Doctor Mora | Guanajuato | Doctor mora |
| 193 | Fijo | TELMEX | Doctor Mora | Guanajuato | Doctor mora |
| 193 | Fijo | TELMEX | Colón | Querétaro | Colon |
| 193 | Fijo | TELMEX | Colón | Querétaro | Colon |
| 193 | Fijo | TELMEX | San José Iturbide | Guanajuato | Buenavistilla |
| 193 | Fijo | TELMEX | San José Iturbide | Guanajuato | Buenavistilla |
| 193 | Fijo | TELMEX | San José Iturbide | Guanajuato | Ojo de agua del refugio |
| 193 | Fijo | TELMEX | San José Iturbide | Guanajuato | Ojo de agua del refugio |
| 193 | Fijo | TELMEX | Colón | Querétaro | San jose la peñuela (la peñuela) |
| 193 | Fijo | TELMEX | Colón | Querétaro | Esperanza |
| 193 | Fijo | TELMEX | Colón | Querétaro | Esperanza |
| 194 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 195 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 195 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 196 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 197 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 198 | Fijo | TELMEX | San José Iturbide | Guanajuato | San jose iturbide |
| 198 | Fijo | TELMEX | San José Iturbide | Guanajuato | San jose iturbide |
| 198 | Fijo | TELMEX | San José Iturbide | Guanajuato | San jose iturbide |
| 198 | Fijo | TELMEX | Colón | Querétaro | Galeras |
| 198 | Fijo | TELMEX | San José Iturbide | Guanajuato | San jose iturbide |
| 198 | Fijo | TELMEX | Doctor Mora | Guanajuato | Jesus maria |
| 198 | Fijo | TELMEX | Doctor Mora | Guanajuato | Jesus maria |
| 198 | Fijo | TELMEX | San José Iturbide | Guanajuato | San jose iturbide |
| 198 | Fijo | TELMEX | San José Iturbide | Guanajuato | San jose iturbide |
| 198 | Fijo | TELMEX | San José Iturbide | Guanajuato | San jose iturbide |
| 199 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 200 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 201 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 202 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 203 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 204 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 205 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 206 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 207 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 207 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 208 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 209 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 209 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 210 | Fijo | MCM | San José Iturbide | Guanajuato | San jose iturbide |
| 210 | Fijo | MCM | Colón | Querétaro | Colon |
| 211 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 212 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |
| 213 | Movil | AT&T | San José Iturbide | Guanajuato | San jose iturbide |