Do you guys remember the credit card foreign transaction fee settlement last year? I think the deadline for filing a claim is coming soon (this weekend?). Unfortunately I lost the letter (with my claim ID).

A little google search came up with this site:

https://www.ccfsettlement.com/claim/1/

But I really don't remember which of my credit cards was involved in the settlement. And the above webpage asked me to put down my creditcard number....

Is it a scam site?

the website is correct. If you have refund Id it wont ask any CC #'s. Since you lost Id, they might be asking for CC #'s.

Then should I try all my old CC#'s or just any one would be fine?

here's the thread: b$ thread

Yeah, that's the site.

I followed the letter and entered my info with the claim ID last week.