Facility	City	Industry	Status	Distance
Earthwalk Communications, INC	Manassas	Computer Storage Device Manufacturing 334112	ACTIVE	1.3 KM
Lockheed Martin Corporation	Manassas	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	ACTIVE	5.3 KM
Ncs Technologies INC	Manassas	Electronic Computer Manufacturing 334111	ACTIVE	5.3 KM
General Dynamics Mission Systems, INC.	Chantilly	Electronic Computer Manufacturing 334111	LIKELY ACTIVE	10.6 KM
Rugged Logic, INC.	Chantilly	Other Aircraft Parts and Auxiliary Equipment Manufacturing 336413	ACTIVE	10.9 KM

Every listed plant in Prince William County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 9 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.

SAM.gov entity registrationOPERATING
Record U71VWYMWJX93 · first seen FEB 2026 · last seen OCT 2026
The company’s own websiteOPERATING
first seen JUL 2026 · last seen AUG 2026

IN PRINCE WILLIAM COUNTY9 other plants share this one’s industry (Computer and Peripheral Equipment Manufacturing, NAICS 3341); 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: ECCN INC
Street address: SAM.gov: 7508 DIPLOMAT DR
City: SAM.gov: MANASSAS
State: SAM.gov: VA
Coordinates: Census geocoder: 38.794247898379,-77.518189469444 · JUL 2026
Website: SAM.gov: www.eccninc.com
Year established: Company website: 2010 · AUG 2026
CAGE code: SAM.gov: 6LA20
SAM registration expires: SAM.gov: 2027-02-26

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