Actually leaving the field blank in the application is not a bad idea. At least in Delhi the department assigns the correct AO and issues the PAN card.
If you want to figure out the AO - you can use the Income Tax Government website: Go to this link. Select your state and go from there. (Note that only Internet Explorer worked for me, so use IE). The AO assignment is based on the first initial of your last name.
PAN card application frame incorporates the AO code. The Permanent Account Number/Card does not independent from anyone else show locale, as ward is not a perpetual data. Be that as it may, in the database each PAN is connected to a 10 digit Assessing Officer code demonstrating the purview of the citizen which characterizes the Chief Commissioner Region, the Commissioner's Charge, the Joint Commissioner Range, and the place and assignment of the Assessing Officer(s). <a href="
pancardonline.in/know-your-pan-jurisdiction/ ">click here
You can apply for pan card throgh NSdL or UDI after applying for PAN card you get acknowledgement number.If you applied for pan card online and want to know about your pancard status visit this site. pancardonline.in/pan-card-status/