| 511210 | Software Publishers |
| 517410 | Satellite Telecommunications |
| 517919 | All Other Telecommunications |
| 518210 | Data Processing, Hosting, and Related Services |
| 519190 | All Other Information Services |
| 541330 | Engineering Services |
| 541511 | Custom Computer Programming Services |
| 541512 | Computer Systems Design Services |
| 541513 | Computer Facilities Management Services |
| 541519 | Other Computer Related Services |
| 541611 | Administrative Management and General Management Consulting Services |
| 541614 | Process, Physical Distribution, and Logistics Consulting Services |
| 541618 | Other Management Consulting Services |
| 541690 | Other Scientific and Technical Consulting Services |
| 541930 | Translation and Interpretation Services |
| 561110 | Office Administrative Services |
| 561410 | Document Preparation Services |
| 561421 | Telephone Answering Services |
| 561431 | Private Mail Centers |
| 811213 | Communication Equipment Repair and Maintenance |