TABLE OF CONTENTS
SRN
These are shares you received directly from the company (probably received as an employee bonus when you worked for them e.g. BHP)
Try look through your mail to locate it.
Otherwise, you will have to call up the share registry to locate it.
HIN
These are shares you bought from a trading platform.
Commsec
its on your commsec EOFY report
Nabtrade
Go to TRADING > HOLDINGS > and screenshot this screen or print this screen
Westpac trading
its on your Westpac EOFY report
Anztrading/CMC
go to ACCOUNT > ACCOUNT INFORMATION > select your account > SHOW HIN > enter your pin
Selfwealth
Go to SETTINGS > PORTFOLIOS > scroll down and you will see the HIN