Check your welcome email first. If that’s gone, log into your broker’s app. If you’ve lost access to the app as well, the NSDL CAS portal will show every account linked to your PAN. If all else fails, call your broker with your PAN card handy.

First, check your broker’s app, account statement and account-opening documents.

If you still can’t find it, contact your broker or DP. CDSL also advises investors who don’t know their BO ID to approach their DP for the account number.