How to differentiate the holding stocks to NSE and BSE

#1
I have shares in my demat account and I'm not sure if they are purchased from NSE of BSE as I was trading through a broker earlier. I would now like to sell these shares using ICICI online trading and hence am trying to identify if these shares belong to BSE or NSE.

Can you let me know how I can differentiate the shares holding between NSE and BSE?