BK BILLING on a credit report: bank account or loan
BK BILLING is probably a bank account or loan: on reports, "BK" usually stands for bank.
How to find out which company reported BK BILLING
Your free report at AnnualCreditReport.com shows the full name and address of the bank behind BK BILLING; our guide to identifying a creditor explains how to ask the bureau if it doesn't.
FDIC-insured banks can be looked up by name in FDIC BankFind.