Like what Minai said, UNSW often denies that NSRL cutoffs even exist - they say that it is the same as the UAI cutoff. Not many people in administration at UNSW seem to know what NRSL cutoffs are, and one woman I spoke to said that even if she was aware of such cutoffs they wouldn't release them.
This year when I asked USYD the NSRL law cut-off they straight out gave it to me.
You're in luck if you want to goto USYD, just pester them about it - at least they seem to know what it is.