I did the same thing (Optimum customer by any chance?) & the channel 1159 does not exist. I looked it up & realized the parent company took the channel away last year when the network wanted to renegotiate the contract which is laughable considering how little it gets in ratings.
Yes Optimum and sitting at 1159 no one is going to discover you flipping through the channels-which im sure is a ratings killer. I had no idea there were even watchable channels up there.