They are not called CONFIDENTIAL informants for nothing - you will find out if they snitched you out in court or ask them like their really going tell you and the popos aint going tell you so that is the only way
There is no way you will find a confidential informant list online for obvious reasons. If they were posted online, they wouldn't be called confidential. Again, the police wouldn't list these names online, because that would put their lives in danger; not too many people like snitches.
I'd recommend asking at the police station. Or you could go to that club in town - you know the one - and ask the people there if they are informants. You'll have more luck asking people who have tattoos and/or shaved heads. Good luck!