| Business | Phone |
| Northeast Fiber Optics 64 Mill St, Southbridge 1550 | (508) 765-7700 |
| Terabit Optical Networks 64 Mill St, Southbridge 1550 | (508) 765-1228 |
| Schott Fiber Optics Inc 122 Charlton St, Southbridge 1550 | (508) 765-9744 |
| Fused Fiberoptics 79 Golf St, Southbridge 1550 | (508) 765-1652 |