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 |
|---|---|---|---|---|---|
| 171 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 172 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 173 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 174 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 175 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 176 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 177 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 178 | Fijo | TELMEX | Mazatlán | Sinaloa | Mazatlan |
| 179 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 180 | Fijo | AXTEL | Mazatlán | Sinaloa | Mazatlan |
| 181 | Fijo | AXTEL | Mazatlán | Sinaloa | Mazatlan |
| 182 | Fijo | AXTEL | Mazatlán | Sinaloa | Mazatlan |
| 183 | Fijo | AXTEL | Mazatlán | Sinaloa | Mazatlan |
| 184 | Fijo | AXTEL | Mazatlán | Sinaloa | Mazatlan |
| 185 | Fijo | AXTEL | Mazatlán | Sinaloa | Mazatlan |
| 186 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 187 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 188 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 189 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 190 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 191 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 192 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 193 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 194 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 195 | Fijo | MEGACABLE | Mazatlán | Sinaloa | Mazatlan |
| 196 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 197 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 198 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 198 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 199 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 199 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 200 | Fijo | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 201 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 202 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 203 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 203 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 204 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 205 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 206 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 207 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 208 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 209 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 210 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 211 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 212 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 213 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 214 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 215 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 216 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 217 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 218 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 219 | Fijo | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 220 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 221 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 221 | Movil | AT&T | Mazatlán | Sinaloa | Mazatlan |
| 222 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 223 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 224 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 225 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 226 | Fijo | MCM | Mazatlán | Sinaloa | Mazatlan |
| 226 | Fijo | MCM | Mazatlán | Sinaloa | Mazatlan |
| 226 | Fijo | MCM | Mazatlán | Sinaloa | Mazatlan |
| 226 | Fijo | MCM | Mazatlán | Sinaloa | Mazatlan |
| 227 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 228 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 229 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 230 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 231 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 232 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 233 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 234 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 235 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 236 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 237 | Movil | MOVISTAR | Mazatlán | Sinaloa | Mazatlan |
| 238 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 239 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 240 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 241 | Movil | TELECOMUNICACIONES 360 | Mazatlán | Sinaloa | Mazatlan |
| 241 | Movil | TELECOMUNICACIONES 360 | Mazatlán | Sinaloa | Mazatlan |
| 242 | Movil | IBO CELL | Mazatlán | Sinaloa | Mazatlan |
| 243 | Movil | QBOCEL | Mazatlán | Sinaloa | Mazatlan |
| 243 | Movil | QBOCEL | Mazatlán | Sinaloa | Mazatlan |
| 244 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 245 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 246 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 247 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 248 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 249 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 250 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 251 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 252 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 253 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 254 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 255 | Movil | TELCEL | Mazatlán | Sinaloa | Mazatlan |
| 256 | Movil | CELMAX | Mazatlán | Sinaloa | Mazatlan |
| 256 | Fijo | MAXCOM | Mazatlán | Sinaloa | Mazatlan |
| 256 | Movil | CELMAX | Mazatlán | Sinaloa | Mazatlan |
| 256 | Movil | CELMAX | Mazatlán | Sinaloa | Mazatlan |
| 257 | Fijo | TOTAL PLAY | Mazatlán | Sinaloa | Mazatlan |
| 258 | Fijo | TV REY | Mazatlán | Sinaloa | Mazatlan |