Billing sites are the strange names that appear on your credit card statement when you have been the victim of a scam. There are quite a few of them. For each branded site, there is a corresponding billing site that is used for discreet billing purposes and it is also the customer service site.
This is important: Because there are many ways to get to one of the branded sites, only you can know if you should have known about the charge. Sometimes people forget how the charge would appear.
Enter the merchant name (example xyz.com) that appears on your credit card statement in the search box to see if I have any information.