Welcome to the Verify CCO Online (VCO) System of the National Commission for the Certification of Crane Operators (NCCCO). This database is a comprehensive directory of individuals who have been certified by NCCCO. Search by Certification Number or Candidate ID To search the database please enter a valid CCO Certification number or Candidate ID: CCO certifications are authorized by responsible personnel and issued subject to applicable conditions and limitations, including ongoing compliance with the Code of Ethics and Substance Abuse Policy, and subject to provisions of suspension and revocation. Updated/Replacement NCCCO Certification Cards may be ordered online. * Go to nccco.org/codes for a complete list and explanation of designation codes used on CCO certification cards.