Yes, obviously it's using Bittrex for PND now.
For X11 the problem is that most of the X11 coins on Bittrex have been removed or switched to PoS (NL, CRYPT, LTCX, FRAC, KIWI, GLYPH, CYC, GDN, HIRO, KARM, LIMX, MUN, GRN, PYRA, SIS, FRX).
Only CANN, URO and GIVE are still alive and CANN is by far the best out of them