NAICS + PSC page

NAICS 488999 and PSC D399 contractors

All Other Support Activities for Transportation. IT AND TELECOM- OTHER IT AND TELECOMMUNICATIONS. Use this cross-code page to see which visible federal contractors sit in the overlap between these two public category lanes.

NAICS 488999 + PSC D399

Last updated: April 3, 2026

Visible recipients

Mapped obligations

$1,945,327,473

State overlap

Top recipients

Visible recipients in the NAICS 488999 and PSC D399 overlap

Mantech Advanced Systems International, Inc.

Herndon, VA

Mantech Advanced Systems International, Inc. is a federal category business profile based in Herndon, VA. The current public data layer shows $879,999,975 in visible federal obligations across 686 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R425.

$1,945,327,473