I wasn't trying to be a smartass - I thought my answer was relevant! The answer is that the information isn't on the ERCs, neither Jepps or Navtech. If it's your destination or alternate, then you will have the frequency on your approach charts.
What I hadn't considered is that the OP wanted to listen for en-route information - I have only flown ACARS equipped aircraft for the last twelve years, so the question didn't occur to me. The answer to that is that you will have to get the approach plates out and have a look. If you're considering it as an en-route alternate then I expect you will have them on board. Alternatively, get the Flight Supplement out and have a look at the list of ATISs available in the MET section. It lists them all for you region with the frequencies - and mentions the VOR ident from which they are being broadcast.
Small apology- but only a very small one!