| Business | Phone |
| A Car Phone Communications Inc 1150 1st Ave, King Of Prussia 19406 | (610) 337-2300 |
| Cisco Systems Inc 900 E 8th Ave, King Of Prussia 19406 | (610) 768-8009 |
| Digital Communications Assoc 900 E 8th Ave, King Of Prussia 19406 | (610) 265-3301 |
| Supplyforce.Com 650 Park Ave # 200, King Of Prussia 19406 | (610) 278-9777 |
| Second Century Communication 1000 1st Ave, King Of Prussia 19406 | (610) 962-9833 |
| Ovvid Communication 451 Crooked Ln, King Of Prussia 19406 | (610) 275-0802 |
| On Fiber Communications Inc 1010 W 8th Ave, King Of Prussia 19406 | (610) 337-9274 |