The NSW Board is trialing a register search, so you can check that out
NSW Pod Reg Board.
No register search at
ACT Pod Reg Board Site
If you still have current reg in ACT. ie you have paid your annual fee, muttual recognition in NSW is easy, if you are no longer registered in the ACT, there are a few possibilities.
1. NSW may accept your old A.Pod.C. assessment.
2. You can apply to have your registration in ACT restored
3. You reapply through A.Pod.C.