I received a call from this number (312-690-7945). Apparently I won an all expense paid cruise to the Bahamas. If something sounds to good to be true.... So I hung up.
I sometimes get legitimate calls from this (somewhat local) area code, almost answered, then thought better of it and let it go through to voicemail. No message, so very obviously not legit. Will mark as spam and set to silent ringtone.