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Department of Homeland Security 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). Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of Homeland Security.

Department of Homeland Security · NAICS 541990 · PSC R420
Last updated: April 6, 2026

Visible recipients

1

Mapped obligations

$9,286,835

State overlap

1

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541990 and PSC R420