The first four characters (ANDB) represents that it belongs to Andhra Bank. The fifth character (0) is reserved for future use. The last 6 characters (001628) represents that it belongs to Darbhanga branch in district Darbhanga of Bihar.
IFSC code (ANDB0001628) can be found on the front page of the account holder's passbook or in cheque leaf. You can also verify the same by contacting bank authority of Andhra Bank since data here could be outdated.
Darbhanga branch of Andhra Bank is in Bihar state of India.
VIKRAM CHAMBER,1ST FLO, MIRZAPUR(MAIN RD), DARBHANGA, BIHAR-846004