Sadly I don't have any idea myself. I assume that there are several solo miners, and since ANC is in multipools like on cex.io ...
This is the only place to ask since many of the ANC folks are looking at this thread, maybe you reach someone on IRC - sometimes it's pretty active there - sometimes!.
Sorry I couldn't help.
greets
Nah hashrate have a to stable low for it to be multipools + AnonCoin is rarely on top of Litecoin chart.
So the conclusion is that +95% of the hashrate is private at the moment?
Largets pool i can find is cryptotroll and it have a few % of total hashrate.
Those other +18GH/s must be somewhere..