| Business | Phone |
| Conversent Communications 2 Mount Royal Ave, Marlborough 1752 | (508) 459-6300 |
| Conversent Communications 313 Boston Post Rd W, Marlborough 1752 | (508) 486-6300 |
| Ctc Communications Corp 225 Cedar Hill St # 11, Marlborough 1752 | (508) 357-6800 |
| New England Phone Corp 201 Forest St # 150, Marlborough 1752 | (508) 870-5898 |