I looked it up and sent an email to Comcast... what good it will do, I don't know.
Comcast is our cable company too. There is another horse channel called Horse-TV. None of the providers in my area offer it yet. They have been trying to DISH and Direct to add their channel.
I have sent Comcast several of their letters trying to get them to add it. It would probably be popular around here since there are lots of equestrians.