| Business | Phone |
| Chemical Information Svc Inc 9101 Lyndon B Johnson Fwy, Dallas 75243 | (972) 238-7108 |
| Information & Technology Cnslt 11886 Greenville Ave 112, Dallas 75243 | (972) 808-9909 |
| Information Research Agency 6036 Winton St B, Dallas 75206 | (214) 821-3487 |
| Linking Up 17194 Preston Rd 102, Dallas 75248 | (972) 327-6573 |
| Video Monitoring-America 8111 Lbj Fwy 465, Dallas 75251 | (972) 644-9696 |
| Fair Park Information Line 1121 1st Ave, Dallas 75210 | (214) 421-9600 |