How to Become a Member-Only User
from the NICB website:
"Access to the members' section is only available to current NICB members. Law enforcement is not eligible for members' access.
If you are already a member and would like to obtain access or have misplaced your login information, contact NICB Technical Support at 800-447-6282, ext. 7003 or techsupport@nicb.org. If you know your user ID but not your password, click here.
NICB membership is open to insurance companies licensed in any of the 50 states, the District of Columbia, Puerto Rico, the Virgin Islands, or the insular possessions of the United States as well as auto rental companies, auto finance companies, auto auctions and certain self-insured entities may be eligible for membership in the NICB. For more information, contact Kym Forester at kforester@nicb.org or 714-277-3611."
I didn't check, but from the above, I'd guess there's a significant fee for membership.