Acronym |
Definition |
| 325 | Texas |
| 330 | Ohio - Eastern |
| 331 | Illinois overlay deferred |
| 334 | Alabama - Montgomery/Mobile/Lower Alabama |
| 336 | North Carolina |
| 337 | Louisiana |
| 339 | Massachusetts |
| 340 | US Virgin Islands |
| 341 | California |
| 345 | Cayman Islands |
| 347 | New York City, New York (not in Manhattan) |
| 351 | Northeast Massachusetts Overlay |
| 352 | Florida - North Central (Gainesville) |
| 360 | Washington - Western |
| 361 | Texas - Southeast (Corpus Christi) |
| 365 | Greater Toronto and Hamilton Area (excluding Toronto) |
| 369 | California (future assignment) |
| 380 | Ohio - Central (not active) |
| 385 | Utah - North Central (Salt Lake City) |
| 386 | Florida - North Central, Non-contiguous |
| 400 | Service Access Code |
| 401 | Rhode Island |
| 402 | Nebraska - Eastern and Northeast |
| 403 | Alberta - Southern |
| 404 | Georgia - Metro Atlanta |
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