IN-ADDR.ARPA. Domain

[eyeball]

Hi All,

i just cannot get my head around this so could i have some help please

if for example i had the ip 213.123.169.96 and i wanted to know the domain it belonged to, i know that if i query a name server the name server will use 96.169.123.213.IN-ADDR.ARPA.

and i am assuming it will work its way up from 96 to 169 all the way to the . root server,

so my question is this..

once the query has gone up through the name servers and found itself at the root servers how does it know that this 96.169.123.213.IN-ADDR.ARPA. resolves to the microsoft domain? (for example)

please help this is really annoying me,

thanks

[eyeball]

its ok guys iv found the answer