CCSCU on a credit report: credit union account
CCSCU is probably a credit union account: it runs a name, "CCS", into "CU", the usual abbreviation for credit union.
How to find out which company reported CCSCU
Your free report at AnnualCreditReport.com shows the full name and address of the credit union behind CCSCU; our guide to identifying a creditor explains how to ask the bureau if it doesn't.
Federally insured credit unions are registered with the NCUA.