| Business | Phone |
| Kustom Automated Technologies 868 S Naperville Plainfield Rd, Naperville 60540 | (630) 355-3585 |
| Technology Management 1191 Hobson Mill Dr, Naperville 60540 | (630) 355-8788 |
| Lexcom 1600 Shore Rd I, Naperville 60563 | (630) 428-7712 |
| Mci 1240 E Diehl Rd, Naperville 60563 | (630) 955-0200 |
| Sbc Naperville 60563 | (630) 505-0258 |
| Tellabs Inc 1415 W Diehl Rd, Naperville 60563 | (630) 798-8800 |
| Tpc Consulting Inc 113 Barley Ave, Naperville 60563 | (630) 357-0780 |