As you Asking for the IFSC Code of the G.N.Chetty Roadt Nagar chennai branch of the HDFC Bank the details of the branch Including the IFSC Code is given below

Branch Details

Bank: HDFC BANK LTD
Branch: CHENNAI - T NAGAR
IFSC Code: HDFC0000206
Branch Code: Last six characters of IFSC Code represent Branch code.
MICR Code: 600240013
Address: 56,G.N.CHETTY ROADT NAGARCHENNAITAMILNADU600017
State: TAMIL NADU
District: CHENNAI
Contact: CHENNAI 6160 6161, REST OF TAMIL NADU AND PONDICHERRY, 98406 73333

For knowing the Details of the any other branches of the HDFC Bank you may Visit the official site of the HDFC Bank

The page may look as Follow

HDFC Bank



There At the top of the page you may get the Menu of branch Locator click on It , After clicking you may Redirect to the page from there you may get the details of the any other branches of the HDFC Bank

For your convince Here I am giving you the Snapshot of that page

HDFC Bank Branch Locator