1. 517110 Wired Telecommunications Carriers
  2. 517911 Telecommunications Resellers
  3. 517919 All Other Telecommunications
  4. 518210 Data Processing, Hosting, and Related services
  5. 541330 Engineering Services
  6. 541511 Custom Computer Programing
  7. 541512 Computer Systems Design Services
  8. 541513 Computer Facilities Management Services
  9. 541519 Other Computer Related Services
  10. 541618 Other Management Consulting Services