A total of 10 sites are hosted on 66.55.134.123.
Here are the first 5 as they would appear when searched for:
lightcast.com/user/pro_videostats
(null)
lightcast.com/user/view_subscription_agrement
(null)
lightcast.com/user/roku_app
(null)
lightcast.com/user/view_form
(null)
lightcast.com/user/account
(null)
...and the list of the remaining 5:
lightcast.com/user/pro_videoschedule
lightcast.com/user/page
lightcast.com/user/pro_channel
lightcast.com/user/pro_centervod