how DNS client perform reverse lookup
barmar at alum.mit.edu
Tue Jan 25 02:56:01 UTC 2005
In article <ct3ioj$1qll$1 at sf1.isc.org>, Keith Ng <ngkeith at triumf.ca>
> Would someone tell me how DNS client perform reverse lookup? Is there
> any root servers like forwards lookup for the in-addr.apra domain?
They start from the normal root servers. These servers have delegation
records for in-addr.arpa, just like they do for com, net, etc. The
client servers follow this reverse delegation in exactly the same way
that they follow forward delegations. As far as the nameservers are
concerned, there's no difference between forward and reverse DNS;
everything is just arbitrary labels to the servers and resolvers.
Barry Margolin, barmar at alum.mit.edu
*** PLEASE post questions in newsgroups, not directly to me ***
More information about the bind-users