| Business | Phone |
| Net Ins Waterloo 50701 | (319) 234-2751 |
| Bluedawn Internet 1604 Baltimore St, Waterloo 50702 | (319) 232-2729 |
| Cedarnet Computer Network 3420 University Ave, Waterloo 50701 | (319) 233-5765 |
| Fonaka Inc 607 Home Park Blvd, Waterloo 50701 | (319) 654-0167 |