I've received several calls from this number over the past month, I live in the Orlando area with a 321 number if that helps whoever is trying to locate these guys. IIRC it's a sales pitch for a condo and the call ends with something like "there has to be a catch, and the catch is you must have a spouse or live in partner and must have a combined family income of at least 50,000 dollars. If you meet this requirement press 1."
I've got plenty of extra minutes, would it be worth it to tie up some call center dudes time to try to figure out who they are?