No idea. Scramble.nl still lists three units using Su-27SK alongside J11a. Plus two more units using solely J11a. Since five units would mean some 100 singleseaters, which is about as many as J11a have been procured, even with a possible several/dozen additional planes in non-front line testing units, such a figure would almost be enough to populate five regiments.
So I would assume Su-27sk have almost all been retired, and perhaps up to a dozen are still alive. UBKs seem a bit more resilient and more numerous.
So I would assume Su-27sk have almost all been retired, and perhaps up to a dozen are still alive. UBKs seem a bit more resilient and more numerous.