Au Finance Bank Limited branches in Katni: Get the list of Au Finance Bank Limited MICR codes in Katni which are made available by Branch. Katni MICR code is a character-recognition technology used mainly by the banking industry to ease the processing and clearance of cheques and other documents. Katni MICR code has 9 digits first three digits are Katni City Code, second three digits are Katni bank code and last three are Katni branch code.