There are many persons from whom I have received query regarding how to know the AO code. Below I am sharing you a link through which you can know your AO code and PAN no. You just need to provide your name, DOB and your father name for this.
Must Read : What is PAN?
: Why PAN?
: Know Status of Your PAN Card
: How to apply for PAN (Permanent Account Number)?
: Breakup or Analysis of PAN (Permanent Account Number)