COLORADO
| Area Code | Ratecenter | Tier |
|---|
| 303 | ALLNSPKLYN | 1 |
| 303 | AURORA | 1 |
| 303 | BRIGHTON | 1 |
| 303 | DECKERS | 1 |
| 303 | DENVER | 1 |
| 303 | DENVERSLVN | 1 |
| 303 | FORTLUPTON | 1 |
| 303 | GEORGETOWN | 1 |
| 303 | HUDSON | 1 |
| 303 | KEENESBURG | 1 |
| 303 | LONGMONT | 1 |
| 719 | AGUILAR | 3 |
| 719 | ALAMOSA | 3 |
| 719 | BUENAVISTA | 3 |
| 719 | CANON CITY | 3 |
| 719 | COLORDOSPG | 1 |
| 719 | FAIRPLAY | 3 |
| 719 | LIMON | 3 |
| 719 | PUEBLO | 3 |
| 719 | SALIDA | 3 |
| 719 | TRINIDAD | 3 |
| 719 | WALSENBURG | 3 |
| 720 | ALLNSPKLYN | 1 |
| 720 | AURORA | 1 |
| 720 | BRIGHTON | 1 |
| 720 | DECKERS | 1 |
| 720 | DENVER | 1 |
| 720 | DENVERSLVN | 1 |
| 720 | FORTLUPTON | 1 |
| 720 | HUDSON | 1 |
| 720 | LONGMONT | 1 |
| 970 | ASPEN | 1 |
| 970 | BASALT | 1 |
| 970 | BAYFIELD | 3 |
| 970 | BERTHOUD | 1 |
| 970 | CARBONDALE | 1 |
| 970 | CRAIG | 3 |
| 970 | DE BEQUE | 1 |
| 970 | DILLON | 3 |
| 970 | DURANGO | 3 |
| 970 | EATON | 1 |
| 970 | ESTES PARK | 1 |
| 970 | FRASER | 3 |
| 970 | FRUITA | 1 |
| 970 | FT COLLINS | 1 |
| 970 | GILCREST | 1 |
| 970 | GLENWD SPG | 1 |
| 970 | GRANBY | 3 |
| 970 | GRAND JCT | 1 |
| 970 | GREELEY | 1 |
| 970 | GUNNISON | 1 |
| 970 | JOHNSTMLKN | 1 |
| 970 | LA SALLE | 1 |
| 970 | LOVELAND | 1 |
| 970 | MEAD | 1 |
| 970 | MONTROSE | 1 |
| 970 | NEW CASTLE | 3 |
| 970 | OLATHE | 1 |
| 970 | OURAY | 1 |
| 970 | PARACHUTE | 1 |
| 970 | PLATTEVL | 1 |
| 970 | RIDGWAY | 1 |
| 970 | SILVERTON | 3 |
| 970 | STEAMBOSPG | 3 |
| 970 | STERLING | 3 |
| 970 | TELLURIDE | 1 |
| 970 | VAIL | 3 |
| 970 | WINDSOR | 1 |