avnish,
it seems you are correct. if you have not received a file number yet. i should not expect anything unless you get.
I also applied under NOC 2174
application mailed: 04-25-2009
application received: 04-27-2009
Date File No Received : Not Yet
It is more than 4 months now, i still dont get a file number. I wonder this NOC 2174 is moving slow.