VinAudit

VinAudit describes itself as a source for vehicle history reports and VIN checks, and its site states that it is an approved NMVTIS data provider. Its homepage lists checks for title history, active theft, salvage and rebuild, title problems, past sale listings and open liens.

VinAudit: VIN check

The directory notes it also offers VIN decoding and other automotive data with a dealer program.

VinAudit functions
Product or serviceFunction
VIN checkA free VIN check and vehicle history reports.
Title history, theft and lien checksTitle history, active theft, salvage or rebuild, title problem and open lien checks.
Past sale listingsA view of past sale listings for a vehicle.
Free market value checkAn estimate of a vehicle's market value.
Free ownership cost checkAn estimate of ownership costs.
Dealer ProgramA vehicle history program for dealers.
Vehicle data APIsMarket Listings API, Market Values API, VIN Decoder API, VIN Build Data API, Window Stickers API, Vehicle History API, VIN Monitoring Service and Plate to VIN API.
Total Market FeedVehicle listings, pricing and inventory data by API, CSV or bulk download.
Vehicle Images API and Background Removal APIVIN-based vehicle images and image background removal.