NAICS 541990 and PSC R420 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: CERTIFICATIONS AND ACCREDITATIONS (OTHER THAN EDUC OR INFO TECH C&A). Cross-code contractor overlap.

NAICS 541990 + PSC R420

Last updated: April 14, 2026

Visible recipients

Mapped obligations

$9,286,835

State overlap

Top recipients

Visible recipients in the NAICS 541990 and PSC R420 overlap

Old Harbor Solutions LLC

Anchorage, AK

Anchorage, AK | 66 awards | Top agency Department of Defense | NAICS 541611

$9,286,835

NAICS page

Loading industry-code contractor and award paths