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 |
|---|---|---|---|---|---|
| 198 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 199 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 200 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 201 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 202 | Fijo | ALESTRA | Celaya | Guanajuato | Celaya |
| 203 | Fijo | ALESTRA | Celaya | Guanajuato | Celaya |
| 204 | Fijo | ALESTRA | Celaya | Guanajuato | Celaya |
| 205 | Fijo | ALESTRA | Celaya | Guanajuato | Celaya |
| 206 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 207 | Fijo | TELMEX | Celaya | Guanajuato | Celaya |
| 208 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 209 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 210 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 211 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 212 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 213 | Fijo | MOVISTAR | Celaya | Guanajuato | Celaya |
| 214 | Fijo | ALESTRA | Celaya | Guanajuato | Celaya |
| 215 | Fijo | TELMEX | Celaya | Guanajuato | Celaya |
| 216 | Fijo | TELMEX | Celaya | Guanajuato | Celaya |
| 217 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 218 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 219 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 220 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 221 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 222 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 223 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 224 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 225 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 226 | Fijo | AVANTEL | Celaya | Guanajuato | Celaya |
| 226 | Fijo | AVANTEL | Celaya | Guanajuato | Celaya |
| 227 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 228 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 229 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 230 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 231 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 232 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 233 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 234 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 235 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 235 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 236 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 237 | Fijo | AVANTEL | Celaya | Guanajuato | Celaya |
| 238 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 238 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 239 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 240 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 241 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 242 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 243 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 244 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 244 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 245 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 246 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 246 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 247 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 248 | Fijo | AVANTEL | Celaya | Guanajuato | Celaya |
| 249 | Fijo | TOTAL PLAY | Celaya | Guanajuato | Celaya |
| 250 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 250 | Fijo | TOTAL PLAY | Celaya | Guanajuato | Celaya |
| 251 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 252 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 253 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 254 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 255 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 256 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 257 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 258 | Fijo | MOVISTAR | Celaya | Guanajuato | Celaya |
| 258 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 259 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 260 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 261 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 262 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 263 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 264 | Movil | AT&T | Celaya | Guanajuato | Celaya |
| 265 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 266 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 266 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 267 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 267 | Fijo | METRORED | Celaya | Guanajuato | Celaya |
| 268 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 269 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 269 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 270 | Movil | TELECOMUNICACIONES 360 | Celaya | Guanajuato | Celaya |
| 270 | Movil | TELECOMUNICACIONES 360 | Celaya | Guanajuato | Celaya |
| 270 | Movil | TELECOMUNICACIONES 360 | Celaya | Guanajuato | Celaya |
| 271 | Movil | IBO CELL | Celaya | Guanajuato | Celaya |
| 272 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 273 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 274 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 275 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 276 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 277 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 277 | Movil | TELCEL | Celaya | Guanajuato | Celaya |
| 278 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 279 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 280 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 281 | Movil | MOVISTAR | Celaya | Guanajuato | Celaya |
| 282 | Fijo | AVANTEL | Celaya | Guanajuato | Celaya |
| 283 | Movil | CELMAX | Celaya | Guanajuato | Celaya |
| 283 | Movil | CELMAX | Celaya | Guanajuato | Celaya |