Below is the current list of Service Provider Information Numbers (SPINs) specific to your area. These numbers are associated with the following qualifying telecommunications service types:
| SPIN | SPIN Name | DBA |
| 143002468 | Citizens Utilities Rural Telephone Co | Frontier Communications |
| 143002479 | CTC of the White Mountains Inc | Frontier Communications |
| 143002480 | Navajo Communications Company Inc - AZ | Frontier Communications |
| 143002646 | CTC of California | Frontier Communications |
| 143033445 | CTC of Golden State | Frontier Communications |
| 143002664 | CTC of Tuolumne | Frontier Communications |
| 143002649 | Global Valley Network Inc | Frontier Communications |
| 143002528 | CTC of Idaho | Frontier Communications |
| 143002547 | CTC of Montana | Frontier Communications |
| 143002677 | CTC of Nevada - North | Frontier Communications |
| 143002678 | CTC of Nevada - South | Frontier Communications |
| 143002480 | Navajo Comm. Company Inc - NM | Frontier Communications |
| 143002642 | CTC of Oregon | Frontier Communications |
| 143002574 | CTC of Utah | Frontier Communications |
| 143002480 | Navajo Comm. Company Inc - UT | Frontier Communications |
| 143001110 | Frontier Communications of America (Long Distance) | Citizens Telecom |
| 143001317 | Frontier Communications of AuSable Valley, Inc. | Frontier Communications |
| 143001334 | Frontier Communications of New York, Inc. | Frontier Communications |
| 143001341 | Ogden Telephone Company | Citizens Telecom |
| 143001348 | Frontier Telephone of Rochester, Inc. | Frontier Communications |
| 143001356 | Citizens Telecommunications Company of NY, Inc. | Citizens Telecom |
| 143001349 | Frontier Communications of Seneca Gorham, Inc. | Frontier Communications |
| 143001351 | Frontier Communications of Sylvan Lake, Inc. | Frontier Communications |
| 143001357 | Citizens Tel Co of New York, Inc. (Red Hook) | Citizens Telecom |
| 143001358 | Citizens Tel Co of New York, Inc. (Western Counties) | Citizens Telecom |
| 143001427 | Citizens Mountain State Telephone | Citizens Telecom |
| 143001364 | Frontier Communications of Breezewood, LLC | Frontier Communications |
| 143001366 | Frontier Communications of Canton, LLC | Frontier Communications |
| 143001371 | Frontier Communications of Pennsylvania | Frontier Communications |
| 143001378 | Frontier Communications of Lakewood, LLC | Frontier Communications |
| 143001386 | Frontier Communications of Oswayo River, LLC | Frontier Communications |
| 143001430 | Citizens Mountain State Telephone | Citizens Telecom |
| 143001431 | Citizens Mountain State Telephone | Citizens Telecom |
| 143001641 | Citizens Mountain State Telephone | Citizens Telecom |
| 143001459 | Frontier Communications of Fairmount, LLC | Frontier Communications |
| 143001474 | Frontier Communications of Georgia, LLC | Frontier Communications |
| 143001548 | Frontier Communications Lamar County, LLC | Frontier Communications |
| 143001552 | Frontier Communications of Alabama, LLC | Frontier Communications |
| 143001561 | Frontier Communications of the South, LLC | Frontier Communications |
| 143001614 | Frontier Communications of Mississippi, Inc. | Frontier Communications |
| 143001645 | Citizens Telephone of Tennessee, LLC | Citizens Telecom |
| 143001789 | Rhinelander Telephone Company | Citizens Telecom |
| 143001698 | Frontier Communications of Michigan, Inc. | Frontier Communications |
| 143001731 | Frontier Communications of Indiana, Inc. | Frontier Communications |
| 143001761 | Frontier Communications of Thorntown, Inc. | Frontier Communications |
| 143001799 | Rhinelander Telephone Company | Citizens Telecom |
| 143001828 | Rhinelander Telephone Company | Citizens Telecom |
| 143001811 | Frontier Communications of Mondovi, LLC | Frontier Communications |
| 143001829 | Rhinelander Telephone Company | Citizens Telecom |
| 143001832 | Frontier Communications - St. Croix, LLC | Frontier Communications |
| 143001848 | Frontier Communications of Wisconsin, LLC | Frontier Communications |
| 143001850 | Frontier Communications of Viroqua, LLC | Frontier Communications |
| 143001864 | Frontier Communications of DePue, Inc. | Frontier Communications |
| 143001868 | Frontier Communications of Lakeside, Inc. | Frontier Communications |
| 143001883 | Frontier Communications of Illinois, Inc. | Frontier Communications |
| 143001894 | Frontier Communications - Midland, Inc. | Frontier Communications |
| 143001897 | Frontier Communications of Mt. Pulaski, Inc. | Frontier Communications |
| 143001901 | Frontier Communications of Orion, Inc. | Frontier Communications |
| 143001902 | Frontier Communications - Prairie, Inc. | Frontier Communications |
| 143001904 | Frontier Communications - Schuyler, Inc. | Frontier Communications |
| 143001931 | Frontier Communications of Iowa, Inc. | Frontier Communications |
| 143002076 | Frontier Communications of Minnesota, Inc. | Frontier Communications |
| 143004819 | Frontier Communications of Rochester, Inc. | Frontier Communications |
| 143004645 | Commonwealth Telephone Company (PA ILEC) | Commonwealth |
| 143005465 | CTSI, LLC, DBA Frontier Communications, CTSI Company (PA CLEC) | Commonwealth |
| 143022269 | Citizens Telephone of Nebraska | Citizens Telecom |
| 143022402 | Citizens Telephone of Minnesota | Citizens Telecom |
| 143022698 | Citizens Telephone of Illinois, Inc. | Citizens Telecom |
| 143004780 | Frontier Midstates, Inc. | Frontier Communications |
| 143004786 | Frontier Communications Northwest (WA, OR, ID) | Frontier Communications |
| 143004791 | Frontier North Inc (IN, IL, WI, MI, OH) | Frontier Communications |
| 143004771 | Frontier Communications of the South | Frontier Communications |
| 143001432 | Frontier West Virginia Inc | Frontier Communications |
| 143034515 | Frontier Southwest (CA, AZ, CO) | Frontier Communications |
| 143034514 | Frontier Long Distance and On-Line Services (All Frontier 13 states) | Frontier Communications |
If you need assistance determining which SPIN applies to your service, please contact your Frontier sales representative.
