One Communications Corporation
All OCNs operating under this holding company.
| OCN | Company | HQ | Type | Total | Recent | Website |
|---|---|---|---|---|---|---|
| 013A | CTC Communications Corporation - MA | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 201D | CTC Communications Corporation | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 202D | CTC Communications Corporation - DC | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 203D | CTC Communications of Virginia Inc - VA | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 2694 | CTC Communications Corporation | Burlington, MA | Competitive Local Exchange Carrier | 0 | — | |
| 388D | CTC Communications Corporation - CT | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 389D | CTC Communications Corporation - DE | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 390D | CTC Communications Corporation - ME | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 391D | CTC Communications Corporation - MD | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 392D | CTC Communications Corporation - NH | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 393D | CTC Communications Corporation - NJ | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 394D | CTC Communications Corporation - NY | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 395D | CTC Communications Corporation - PA | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 396D | CTC Communications Corporation - RI | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 397D | CTC Communications Corporation - VT | Burlington, MA | Underlying Local Exchange Carrier | 0 | — | |
| 5389 | Connecticut Telephone & Communication Systems Inc - CT | Wallingford, CT | Competitive Local Exchange Carrier | 0 | — | |
| 579B | Connecticut Telephone & Communication System Inc | Hartford, CT | Wireless Reseller | 0 | — | |
| 7629 | Connecticut Telephone & Communication Systems Inc | Wallingford, CT | Local Reseller | 0 | — | |
| 7759 | CTC Communications | Waltham, MA | Local Reseller | 0 | — |