Acronym |
Definition |
| 284 | British Virgin Islands - Caribbean |
| 289 | Greater Toronto and Hamilton Area, excluding the City of Toronto |
| 300 | Service Access Code |
| 301 | Maryland - Southern and Western |
| 302 | Delaware |
| 303 | Colorado - Denver & Suburban |
| 304 | West Virginia |
| 305 | Florida - SouthEast |
| 306 | Saskatchewan |
| 307 | Wyoming |
| 308 | Nebraska - Western |
| 309 | Illinois - West Central |
| 310 | California - Los Angeles |
| 311 | Reserved Special Function |
| 312 | Illinois - Chicago |
| 313 | Michigan - Detroit and Wayne County |
| 314 | Missouri - Eastern |
| 315 | New York - North Central |
| 316 | Kansas-Wichita area |
| 317 | Indiana - Central |
| 318 | Louisiana - Western |
| 319 | Iowa - Eastern |
| 320 | Minnesota |
| 321 | Florida Space Coast (Melbourne) |
| 323 | California - Los Angeles |
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