Is it possible to know which service a reseller is using if it has no dummy channels?

I have an active account with a reseller who offers 3 services for the premium category. After joining this sub, I've learnt that the first 2 are strong and eagle because they have dummy channels but the 3rd service doesn't seem to have any.

The reseller claims that this secret 3rd service has never been offline in 2 years and am really interested in figuring out which provider he gets this from.