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 |
|---|---|---|---|---|---|
| 233 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 234 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 235 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 236 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 237 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 238 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 239 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 240 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 241 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 242 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 243 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 243 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 244 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 245 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 246 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 247 | Movil | MEGACABLE | Huamantla | Tlaxcala | Huamantla |
| 248 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 248 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 249 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 250 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 251 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 252 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 253 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 254 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 255 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 256 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 257 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 258 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 259 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 260 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 260 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 261 | Fijo | DIGYNETWORKS | Huamantla | Tlaxcala | Huamantla |
| 262 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 263 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 263 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 264 | Fijo | OPERBES | Huamantla | Tlaxcala | Huamantla |
| 265 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 266 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 267 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 268 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 269 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 269 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 270 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 271 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 272 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 273 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 274 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 275 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 276 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 276 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 277 | Fijo | ROBOT | Huamantla | Tlaxcala | Huamantla |
| 277 | Fijo | ROBOT | Huamantla | Tlaxcala | Huamantla |
| 278 | Fijo | TELECOMMERCE | Huamantla | Tlaxcala | Huamantla |
| 279 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 280 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 281 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 282 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 283 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 284 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 285 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 286 | Movil | AT&T | Huamantla | Tlaxcala | Huamantla |
| 287 | Movil | ALTÁN | Huamantla | Tlaxcala | Huamantla |
| 287 | Movil | ALTÁN | Huamantla | Tlaxcala | Huamantla |
| 288 | Movil | VIRGIN | Huamantla | Tlaxcala | Huamantla |
| 289 | Fijo | TELECOMMERCE HOLDING | Huamantla | Tlaxcala | Huamantla |
| 290 | Fijo | CENTERNEXT | Huamantla | Tlaxcala | Huamantla |
| 291 | Fijo | INBTEL | Huamantla | Tlaxcala | Huamantla |
| 292 | Fijo | TELIGENTIA | Huamantla | Tlaxcala | Huamantla |
| 471 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 471 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | San jose xicohtencatl |
| 472 | Fijo | TELMEX | Huamantla | Tlaxcala | San jose xicohtencatl |
| 472 | Fijo | TELMEX | Ixtenco | Tlaxcala | Ixtenco |
| 472 | Fijo | TELMEX | Ixtenco | Tlaxcala | Ixtenco |
| 472 | Fijo | TELMEX | Ixtenco | Tlaxcala | Ixtenco |
| 475 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 475 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 475 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 475 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 475 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 475 | Movil | TELCEL | Huamantla | Tlaxcala | Huamantla |
| 488 | Fijo | TELMEX | Huamantla | Tlaxcala | Carmen xalpatlahuaya, el |
| 596 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 688 | Fijo | TELMEX | Huamantla | Tlaxcala | Huamantla |
| 688 | Fijo | TELMEX | Huamantla | Tlaxcala | Colonia francisco villa tecoac |
| 688 | Fijo | TELMEX | Huamantla | Tlaxcala | Colonia del valle |
| 688 | Fijo | TELMEX | Huamantla | Tlaxcala | General francisco villa |
| 689 | Fijo | TELMEX | Huamantla | Tlaxcala | Colonia lazaro cardenas |
| 690 | Fijo | MEGACABLE | Huamantla | Tlaxcala | Huamantla |