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 |
|---|---|---|---|---|---|
| 221 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 222 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 223 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 224 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 224 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 225 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 226 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 227 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 228 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 229 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 229 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 230 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 231 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 232 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 233 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 234 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 235 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 236 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 237 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 238 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 239 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 240 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 241 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 242 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 243 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 244 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 245 | Movil | MEGACABLE | Uriangato | Guanajuato | Uriangato |
| 245 | Movil | MEGACABLE | Yuriria | Guanajuato | Yuriria |
| 245 | Movil | MEGACABLE | Moroleón | Guanajuato | Moroleon |
| 245 | Fijo | MEGACABLE | Moroleón | Guanajuato | Moroleon |
| 245 | Fijo | MEGACABLE | Moroleón | Guanajuato | Moroleon |
| 246 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 247 | Fijo | ROBOT | Moroleón | Guanajuato | Moroleon |
| 247 | Fijo | ROBOT | Yuriria | Guanajuato | Yuriria |
| 247 | Fijo | ROBOT | Moroleón | Guanajuato | Moroleon |
| 247 | Fijo | ROBOT | Yuriria | Guanajuato | Yuriria |
| 248 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 249 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 250 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 251 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 252 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 253 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 254 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 255 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 256 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 256 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 257 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 258 | Fijo | TELIGENTIA | Moroleón | Guanajuato | Moroleon |
| 259 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 260 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 260 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 261 | Movil | ALTÁN | Yuriria | Guanajuato | Yuriria |
| 261 | Movil | ALTÁN | Yuriria | Guanajuato | Yuriria |
| 262 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 263 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 264 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 265 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 266 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 266 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 267 | Fijo | CABLEVISIONRED | Moroleón | Guanajuato | Moroleon |
| 267 | Fijo | CABLEVISIONRED | Moroleón | Guanajuato | Moroleon |
| 268 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 269 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 270 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 271 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 272 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 273 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 274 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 274 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 275 | Fijo | CONVERGIA | Moroleón | Guanajuato | Moroleon |
| 276 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 277 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 278 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 279 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 280 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 281 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 282 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 283 | Movil | AT&T | Moroleón | Guanajuato | Moroleon |
| 284 | Fijo | CENTERNEXT | Moroleón | Guanajuato | Moroleon |
| 285 | Fijo | INBTEL | Moroleón | Guanajuato | Moroleon |
| 286 | Fijo | MCM | Uriangato | Guanajuato | Uriangato |
| 445 | Fijo | TELMEX | Moroleón | Guanajuato | Moroleon |
| 445 | Fijo | TELMEX | Moroleón | Guanajuato | Moroleon |
| 445 | Fijo | TELMEX | Uriangato | Guanajuato | Derramadero, el |
| 445 | Fijo | TELMEX | Uriangato | Guanajuato | Derramadero, el |
| 445 | Fijo | TELMEX | Uriangato | Guanajuato | Derramadero, el |
| 445 | Fijo | TELMEX | Moroleón | Guanajuato | Moroleon |
| 445 | Fijo | TELMEX | Moroleón | Guanajuato | Moroleon |
| 445 | Fijo | TELMEX | Moroleón | Guanajuato | Moroleon |
| 445 | Fijo | TELMEX | Moroleón | Guanajuato | Moroleon |
| 445 | Fijo | TELMEX | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |
| 450 | Movil | TELCEL | Moroleón | Guanajuato | Moroleon |