| Business | Phone |
| Acm Telecom Corp 1811 Chestnut St, Philadelphia 19103 | (215) 988-9000 |
| American Long Lines Inc 2401 Locust St # 401, Philadelphia 19103 | (215) 568-7300 |
| American Tower Corp 1600 Schuylkill Ave # A, Philadelphia 19145 | (215) 389-0176 |
| American Tower Corp 8200 Ridge Ave, Philadelphia 19128 | (215) 482-0759 |
| Avaya Inc 512 N 2nd St, Philadelphia 19123 | (215) 629-4200 |
| Broadwing Commmunications 401 N Broad St # 100, Philadelphia 19108 | (215) 922-4302 |
| Walker Telecommunications 8625 Temple Rd, Philadelphia 19150 | (215) 753-9400 |
| Verizon Communications 11016 Knights Rd, Philadelphia 19154 | (215) 632-0716 |
| Verizon Communications 1301 Filbert St, Philadelphia 19107 | (215) 972-8340 |
| Verizon Communications 1315 Walnut St # 13, Philadelphia 19107 | (215) 351-8658 |
| Verizon Communications 1401 John F Kennedy Blvd, Philadelphia 19102 | (215) 972-8357 |
| Verizon Communications 1429 Walnut St, Philadelphia 19102 | (215) 568-0018 |
| Verizon Communications 1631 Arch St, Philadelphia 19103 | (215) 846-1212 |
| Verizon Communications 26 W Chelten Ave, Philadelphia 19144 | (215) 438-0025 |
| Verizon Communications 4334 Terrace St # 2, Philadelphia 19128 | (215) 848-7998 |
| Verizon Communications 479 N 3rd St, Philadelphia 19123 | (215) 351-3360 |
| Verizon Communications 4808 Leiper St, Philadelphia 19124 | (215) 535-0025 |
| Verizon Communications 5152 Lancaster Ave, Philadelphia 19131 | (215) 877-0034 |
| Verizon Communications 5400 Woodland Ave, Philadelphia 19143 | (215) 729-0025 |
| Verizon Communications 5650 Chestnut St, Philadelphia 19139 | (215) 747-0025 |
| Verizon Communications 7180 Charles St, Philadelphia 19135 | (215) 624-0025 |
| Verizon Communications 7254 Rising Sun Ave, Philadelphia 19111 | (215) 725-0025 |
| Verizon Communications 8382 State Rd, Philadelphia 19136 | (215) 335-6968 |
| Verizon Pennsylvania Inc 1717 Arch St, Philadelphia 19103 | (215) 466-5318 |
| Digital Innovations 7606 Ogontz Ave, Philadelphia 19150 | (215) 248-5001 |
| Fairchild Communication Svc 1650 Market St # 60, Philadelphia 19103 | (215) 851-9010 |
| Fmj Telecommunications Philadelphia 19143 | (215) 727-0991 |
| France Telecom Des Modem 401 N Broad St, Philadelphia 19108 | (215) 925-2354 |
| G Te Gov Systems 620 Chestnut St, Philadelphia 19106 | (215) 574-1256 |
| Grace Telecom 1500 John F Kennedy Blvd # 3, Philadelphia 19102 | (215) 988-0633 |
| Level 3 Communications Inc 401 N Broad St # 3, Philadelphia 19108 | (215) 829-4709 |
| Metro One Telecommunications 4190 City Ave # 403, Philadelphia 19131 | (215) 878-1679 |
| Peco Hyperion Telecommunicatns 1635 Market St, Philadelphia 19103 | (215) 751-0866 |
| Rcs Digital Corp Philadelphia 19106 | (215) 238-9996 |
| T J Telecom 1413 Haines St, Philadelphia 19126 | (215) 548-2202 |
| Telepass Communication Inc 1341 N Delaware Ave # 307, Philadelphia 19125 | (215) 426-4459 |
| Total Telecomm Inc 5850 N 5th St, Philadelphia 19120 | (215) 224-0767 |
| Philadelphia Network Cabling & Fiber Optic 1735 Market St. #A 102, Philadelphia 19103 | (215) 375-7591 |