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 (001646) represents that it belongs to Raigarh branch in district Raigarh of Chhattisgarh.
IFSC code (ANDB0001646) 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 You can also verify the same by contacting bank authority of Andhra Bank since data here could be outdated.
Raigarh branch of Andhra Bank is in Chhattisgarh state of India.
NAYAGANJ, ITWARI BAZAAR, RAIGARH, CHATTISGARH-496001