Random call to my phone. Didn't answer. No voicemail.

Received call but did not answer.  Returned call from land line and it was a reward redemption program.  nothing good disregard all calls from this number

They called, but hung up before I could answer. I don't know anyone from Syracuse, NY.

I answered .... dead air....

Probable telemarketer call with recorded message: "Hi this is Lisa, from Reward Redemption. You recently visited one of our affiliate websites (which I didn't) and in appreciation, we have a $100 rebate card for you."
At that point I hung up. It's obviously a robo-telemarketer site. Since I don't go online with my phone and I've never registered on any site with my cell number, how would a website automatically know my non-smartphone cell number?

I've been on the Do Not Call List for years!  And how do these out-of-state people spoof the intended victim's area code, anyway?