The online status system for N400 is practically useless. Even when your status will be updated online (which can be anywhere from 1 month onwards to never), the information provided there (including your receipt date etc) may be incorrect. The worst thing would be that they would likely say "it currently takes between 30 - 60 days to process this kind of case" ! Lest you jump in joy and hurt your head on the ceiling, desist .. these numbers bear no resemblence to reality in any of the CIS offices anywhere in the country.
So please dont expect the online status to give you anything useful other than the disclaimers!