- 517410 – Satellite Telecommunications
- 518210 – Data Processing, Hosting and Related Services
- 519120 – Libraries and Archives
- 541110 – Offices of Lawyers
- 541330 – Engineering
- 541690 – Nuclear Energy Consulting Services
- 541490 – Other Specialized Design Services
- 541511 – Custom Computer Programming Services
- 541512 – Computer Systems Services
- 541611 – Administrative Management and General Management
Consulting Services - 541513 – Computer Facilities Management Services
- 541519 – Other Computer Related Services
- 541612 – Human Resources Consulting Services
- 541613 – Marketing Consulting Services
- 541618 – Other Management Consulting Services
- 541690 – Other Scientific and Technical Consulting Services
- 541990 – All Other Professional, Scientific, and Technical Services
- 561110 – Office Administrative Services
- 561210 – Facilities Support Services
- 561611 – Investigation Services
- 561612 – Security Guards and Patrol Services
- 611430 – Professional and Management Development Training