Ans. The tool uses search function using Google custom search. That mean the results will shown from askbankifsccode.com but using Google Search.
Ans. Yes. Apart from IFSC code, you can search by many other terms like branch location, MICR code, branch code etc.
Ans. If bank branch is listed in RBI list of NEFT enabled bank branches then your branch should be in askbankifsccode.com too. If this search did not work for you, you can filter bank branch using IFSC Tool, which allows you to sort bank branch by bank name, state, district and branch.