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 |
|---|---|---|---|---|---|
| 257 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 258 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 259 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 260 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 261 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 262 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 262 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 263 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 263 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 264 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 265 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 266 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 267 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 268 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 269 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 269 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 270 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 271 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 271 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 272 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 273 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 274 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 275 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 276 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 277 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 278 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 279 | Fijo | VINOC | Zacatecas | Zacatecas | Zacatecas |
| 280 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |
| 281 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |
| 282 | Fijo | AVANTEL | Zacatecas | Zacatecas | Zacatecas |
| 283 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |
| 284 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |
| 285 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |
| 285 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |
| 286 | Movil | AXTEL | Zacatecas | Zacatecas | Zacatecas |
| 287 | Fijo | MEGACABLE | Zacatecas | Zacatecas | Zacatecas |
| 287 | Fijo | MEGACABLE | Zacatecas | Zacatecas | Zacatecas |
| 288 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 289 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 290 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 291 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 292 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 293 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 294 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 295 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 295 | Movil | TELCEL | Zacatecas | Zacatecas | Zacatecas |
| 296 | Fijo | CLEARCOM | Zacatecas | Zacatecas | Zacatecas |
| 297 | Fijo | TELECOMMERCE | Zacatecas | Zacatecas | Zacatecas |
| 298 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 299 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 299 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 300 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 301 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 302 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 303 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 303 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 304 | Fijo | COMUNICALO | Zacatecas | Zacatecas | Zacatecas |
| 305 | Fijo | MARCATELCOM | Zacatecas | Zacatecas | Zacatecas |
| 306 | Fijo | MBT | Zacatecas | Zacatecas | Zacatecas |
| 307 | Fijo | MEGACABLE | Zacatecas | Zacatecas | Zacatecas |
| 307 | Fijo | MEGACABLE | Zacatecas | Zacatecas | Zacatecas |
| 308 | Movil | ALTCEL | Zacatecas | Zacatecas | Zacatecas |
| 309 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 310 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 311 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 312 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 313 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 314 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 314 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 315 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 315 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 316 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 317 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 318 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 318 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 319 | Movil | ADDINTELI | Zacatecas | Zacatecas | Zacatecas |
| 320 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 321 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 322 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 323 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 324 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 324 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 325 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 326 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 327 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 328 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 328 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 329 | Fijo | COEFICIENTE | Guadalupe | Zacatecas | Guadalupe |
| 330 | Movil | ALTÁN | Zacatecas | Zacatecas | Zacatecas |
| 331 | Movil | ALTÁN | Zacatecas | Zacatecas | Zacatecas |
| 331 | Fijo | ALTÁN | Zacatecas | Zacatecas | Zacatecas |
| 332 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 333 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 334 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 335 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 336 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 337 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 338 | Movil | AT&T | Zacatecas | Zacatecas | Zacatecas |
| 339 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |
| 340 | Movil | MOVISTAR | Zacatecas | Zacatecas | Zacatecas |