Department of the Interior NAICS 561599 and PSC D399 contractors

All Other Travel Arrangement and Reservation Services. IT AND TELECOM- OTHER IT AND TELECOMMUNICATIONS. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of the Interior.

Department of the Interior · NAICS 561599 · PSC D399

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$57,156,686

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 561599 and PSC D399

A-tek, Inc.

Mc Lean, VA

A-tek, Inc. is a federal black american owned business profile based in Mc Lean, VA. The current public data layer shows $32,868,413 in visible federal obligations across 33 awards or transactions. Department of Health and Human Services appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541512 (Computer Systems Design Services). The profile also shows meaningful product and service activity in PSC R499.

$57,156,686