IOP has the following NAICS codes
| 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 |
| 541618 | Other Management Consulting Services |
| 541990 | All Other Professional, Scientific, and Technical Services |
| *Small Business |