| 517810 |
Dial-up Internet service providers, using client-supplied telecommunications connections |
| 517810 |
Earth stations (except satellite telecommunication carriers) |
| 517810 |
Internet service providers, using client-supplied telecommunications (e.g., dial-up ISPs) |
| 517810 |
Online access service providers, using client-supplied telecommunications (e.g., dial-up ISPs) |
| 517810 |
Radar station operations |
| 517810 |
Satellite telemetry operations on a contract or fee basis |
| 517810 |
Satellite tracking stations |
| 517810 |
Telemetry and tracking system operations on a contract or fee basis |
| 517810 |
VoIP service providers, using client-supplied telecommunications connections |
| 518210 |
Application hosting (excluding software publishing) |