On Fri, 15 Jul 2005, John R Levine wrote:
The answer was pretty clearly no. Zone boundaries aren't supposed to be
interesting to applications, and sometimes aren't even visible if the
authority record doesn't fit in the response.
Zone boundaries are used with DNSSEC and that could potentially be of
use for applications. This applies that it can of use for other types
of applications as well even if we don't immediatly see it. But in
current DNS, zonecuts are not easily revealed eventhough bind does have
function for guessing it (works almost 100% of the time) hidden deap
inside the code - but it does mean that it could potentialy become
function available as part of dns resolver library.
--
William Leibzon
Elan Networks
william(_at_)elan(_dot_)net