Section 250-171-5 - LEGAL NAME AND ADDRESS1. Federal Identification Numbers (FID's) will be used to identify and track all UCR registrants. Such numbers may include a registrant's Social Security Number (SSN), Federal Employer Identification Number (FEIN), USDOT Number, Motor Carrier Number (MC Number), or Freight Forwarder Number (FF Number). The Social Security Number may be used for an individual applicant or registrant.2. UCR registrants must provide their full legal name as filed with the United States Department of Transportation's Federal Motor Carrier Safety Administration (FMCSA).3. The legal name as listed on the UCR Registration Form must be consistent with the legal name provided on other applications for motor carrier credentials as well as with any applicable corporate filing. The applicant may be required to rectify any legal name discrepancies before the UCR registration will be processed.4. UCR registrants must provide a phone number and both a principal place of business address and a mailing address. If the address is a rural route, the applicant must include a box number.5. All address and contact information must be consistent with the applicant's current information on FMCSA's Motor Carrier Management Information System (MCMIS), Licensing and Insurance (L&I), or other federal databases. The applicant may be required to correct or update FMCSA data before the UCR registration will be processed.6. A UCR Registration Form without sufficient name, address, or contact information may be returned to the applicant for completion prior to processing the application.29- 250 C.M.R. ch. 171, § 5