What is ABA number for HDFC Bank?

The ABA number, also known as the American Bankers Association routing number, is not applicable to HDFC Bank, as it is an Indian bank and primarily operates under the Indian banking system. Instead, HDFC Bank uses an Indian Financial System Code (IFSC) for electronic fund transfers within India. If you need to conduct transactions involving HDFC Bank from the U.S., you would typically use the bank's SWIFT code, which is HDFCINBB.