Who Knew Trucking LLC

1–2 trucks in Mount Airy, MD

Active FMCSA authority

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Public-record details

Address: 4650 Roop Road, Mount Airy, MD 21771
Phone: (240) 701-3155
Fleet size: 1–2 trucks
USDOT number: 3908355
MC docket (operating authority): MC-1441963 — active
Operation: Interstate
Power units (trucks/tractors): 1
Drivers: 2
FMCSA safety rating: Not rated (most carriers never receive a compliance review)
MCS-150 last updated: 2026-07-14
Registered with USDOT since: 2022-06-27
Other cargo listed: general freight

USDOT 3908355 active with MC-1441963 operating authority in the FMCSA census as of 2026-09-30. Source: FMCSA Company Census / SAFER (record). Data as of 2026-09-30.

Check this mover yourself

FMCSA SAFER company snapshot for USDOT 3908355 — live registration, authority and inspection summary.
FMCSA Licensing & Insurance search — enter USDOT 3908355 to see authority history and insurance on file.
FMCSA National Consumer Complaint Database — file a complaint (1-888-368-7238).

Figures above are what the carrier reported on its MCS-150 filing.

Fleet and driver counts are what the mover reported on its MCS-150 filing. Always confirm authority and insurance on FMCSA SAFER the week you move — authority can be revoked at any time.

Other movers in Mount Airy

Holler Contracting14810 Black Ankle Rd · Mount Airy, MD 21771 · (301) 898-8780 · 3–10 trucksDBA Stambaugh Pole Buildings · USDOT 1500152 · MC-1089742 · 10 power units · 5 driversActive FMCSA authoritySatisfactory safety rating Second Generation Services14810 Black Ankle Road · Mount Airy, MD 21771 · (240) 674-0537 · 3–10 trucksUSDOT 2514884 · MC-62382 · 4 power units · 7 driversActive FMCSA authority

All 3 in Mount Airy →