| Business | Phone |
| A T & T Cits 4444 Lindell Blvd, St Louis 63108 | (314) 534-0130 |
| A T & T Voice 710 N Tucker Blvd, St Louis 63101 | (314) 621-5471 |
| Bartel Communications Inc 5223 Delmar Blvd, St Louis 63108 | (314) 267-1975 |
| T-Netix Inc 7600 Hall St, St Louis 63147 | (314) 382-1753 |
| Teligent Inc 721 Olive St, St Louis 63101 | (314) 436-2395 |
| Sbc 1 Bell Ctr # 4200, St Louis 63101 | (314) 235-9800 |
| Sbc 1010 Pine St # 6-E-22, St Louis 63101 | (314) 235-8888 |
| Sbc 4349 Woodson Rd, St Louis 63134 | (314) 890-7702 |
| Pinnacle-St Louis 210 N Tucker Blvd # 280, St Louis 63101 | (314) 588-9694 |
| Mc Cled Usa 900 Walnut St # 510, St Louis 63102 | (314) 231-1215 |
| Fax Telephone 2 N Euclid Ave, St Louis 63108 | (314) 367-1080 |
| Frontier Communication Svc 1 Mercantile Ctr, St Louis 63101 | (314) 436-4321 |
| Birch Telecom 1335 Hanley Industrial Ct, St Louis 63144 | (314) 821-6347 |