Ephcon LLC

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
Iron Bow Technologies, LLC	Herndon	Electronic Computer Manufacturing 334111	● ACTIVE	1.6 KM
Mantech Advanced Systems International, INC.	Herndon	Aircraft Manufacturing 336411	● ACTIVE	2.1 KM
Iai North America INC.	Herndon	Aircraft Engine and Engine Parts Manufacturing 336412	● ACTIVE	2.7 KM
AIAnixter INC.	Sterling	Other Communications Equipment Manufacturing 334290	◐ LIKELY ACTIVE	3.2 KM
GDGeneral Dynamics Mission Systems, INC.	Herndon	Electronic Computer Manufacturing 334111	◐ LIKELY ACTIVE	3.3 KM

Every listed plant in Fairfax County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 8 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen SEP 2026
• SAM.gov entity registrationOPERATING
  Record SGHZL161LSQ3 · first seen OCT 2025 · last seen OCT 2025

IN FAIRFAX COUNTY11 other plants share this one’s industry (Other Electrical Equipment and Component Manufacturing, NAICS 3359); 0 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

SAM.gov: EPHCON LLC · OCT 2025

Street address

SAM.gov: 2341 DULLES STATION BLVD APT 3 · OCT 2025

City

SAM.gov: HERNDON · OCT 2025

State

SAM.gov: VA · OCT 2025

Coordinates

Census geocoder: 38.956861940368,-77.418546692119 · JUL 2026

Website

SAM.gov: www.ephcon.com · OCT 2025

CAGE code

SAM.gov: 163D5 · OCT 2025

SAM registration expires

SAM.gov: 2026-10-08 · OCT 2025