One ring only.  Suspicious?

Called after office hours.  Let it go to voice mail but no message left. A lot of scammer calls come from this area code.

Something prerecorded from "Lisa" from "reward redemption" saying something like "You have recently visited one of our affiliated websites...please respond to claim your free $100 gift card..."

Called rang once and hung up, called back and it was a recording. " Hi this is Lisa with reward redemptions you recently visited one of our affiliate websites and we wanted to reward you with a $100 gift card" HA! yeah right and you can press 1 to accept or 2 to remove your number. I pressed 2 and yet they still call EVERYDAY!!!

This number called and rang once then hung up. No message.