How to change ao code in pan after moving to bangalore?

Yes, AO code will change automatically when you apply for change in address in your PAN card. However, it is always good to write an application to your previous AO when you do this for file transfer expeditiously. Your file will be duly transferred to Bangalore and you wont have to visit Delhi for that.

Thanks. How can I find postal/E-mail address of my present AO?