If you have e-verify done for your PAN card then you dont need to send it as a hard copy.else send a hard copy with required docs attached with to below address :INCOME TAX PAN SERVICES UNIT (Managed by NSDL e-Governance Infrastructure Limited)5th Floor, Mantri Sterling, Plot No. 341, Survey No. 997 /8, Model Colony, Near Deep Bungalow Chowk, Pune - 411 16