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CORNERSTONE SYSTEMS, INC.

MC321007 · USDOT 2223210 · TN 38125

Active broker authority

Authority activeBroker authority

Bond on fileBMC-84 (surety bond)

Authority age29+ years

BMC-84 (surety bond) on file

Surety: SOUTHWEST MARINE AND GENERAL INSURANCE COMPAN · #14619 · effective 03/12/2020. If they don't pay, you can file a claim against this bond.

⚠ FMCSA flags mail to this address as undeliverable.

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Demand letter + bond-claim letter to SOUTHWEST MARINE AND GENERAL INSURANCE COMPAN, pre-filled with CORNERSTONE SYSTEMS, INC.'s FMCSA info. Already unpaid? $9 claim packet with code LAUNCH10 (reg. $19, through Oct 29).

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FMCSA details: bond, surety, contact

MC / USDOT	MC321007 / 2223210
Broker authority	ACTIVE
Authority age	Granted 1997-06-26 (351 months)
Bond / trust	On file BMC-84 (surety bond): SOUTHWEST MARINE AND GENERAL INSURANCE COMPAN (#14619, effective 03/12/2020)
Surety contact	Look up the surety's claims address on its website, or the "Insurance" page on FMCSA L&I.
Address	3250 PLAYERS CLUB PKWY, MEMPHIS, TN 38125
Phone	(901) 842-0660
Email	mpurnell@cornerstone-systems.com

Source: FMCSA L&I / Census via data.transportation.gov. Fetched 2026-10-23T05:34:00.970Z (cached). Verify on SAFER.

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Is CORNERSTONE SYSTEMS, INC. legit?

CORNERSTONE SYSTEMS, INC. holds active broker authority under MC321007 in FMCSA records, first granted 1997-06-26 (about 29 years ago). A BMC-84 (surety bond) with SOUTHWEST MARINE AND GENERAL INSURANCE COMPAN is on file. Active authority and a bond on file are basic requirements, not a guarantee of payment. Check the Carrier Reports above and verify on SAFER before you book.

CORNERSTONE SYSTEMS, INC. MC number and DOT number

CORNERSTONE SYSTEMS, INC. is listed under MC321007 and USDOT 2223210, based in TN 38125. Always match the MC on your rate con to the company name and phone on FMCSA.

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