A supporting company is a blanket company, financial responsibility filer, transportation service provider, or business that identifies as any combination of the three. Blanket companies, or BOC-3 filers, provide blanket designation of process agents electronically for motor carriers, brokers, and freight forwarders. They designate process agents in all U.S. States and the District of Columbia. Financial responsibility filers are insurance companies, surety companies, or financial institutions that register with FMCSA to file proof of insurance (i.e., BMC-91, BMC-91X, BMC-85) for entities applying for operating authority. Transportation service providers assist individuals or companies applying for and/or maintaining their FMCSA registration (USDOT Number or operating authority registration, biennial updates, reinstatements, etc.).