Here's some info from the site which explains why no information was found:
Not everyone has an MIB Consumer File.
Individuals will not have an MIB Consumer File unless they have applied for individually underwritten life, health, disability income, critical illness or long-term care insurance with an MIB member company in the last seven years. Many individuals do not have an MIB Consumer File because of one or more of the following: (i) they applied to an insurance company that was not an MIB member; (ii) they applied for insurance that was not individually underwritten; or (iii) they applied for insurance more than seven years ago.
As a practical matter, MIB codes are not typically reported on individuals who are in good health, meaning that their life and health insurance applications are approved by the insurer as standard or preferred risks.