| Business | Phone |
| C P Telcom 209 W 1st St, Duluth 55802 | (218) 336-1000 |
| Harbor Business Svc 5491 Hermantown Rd, Duluth 55810 | (218) 529-1102 |
| Integra Telecom 325 W 1st St, Duluth 55802 | (218) 625-4300 |
| Integra Telecomm Duluth 55812 | (218) 724-4194 |
| Norlight Telecommunications 11 E Superior St, Duluth 55802 | (218) 625-2217 |
| Qwest Small Business Sales Duluth 55802 | (218) 720-4004 |