Provided by: djbdns_1.05-8ubuntu1_amd64 
NAME
dnstrace - dns lookup tool
SYNOPSIS
dnstrace t fqdn r
DESCRIPTION
dnstrace searches for all DNS servers that can affect the resolution of records of type t under the
domain name fqdn, starting from the root server r. You can list more than one root server.
dnstrace uses the standard DNS resolution algorithm, but follows all possible paths in the algorithm. It
prints all responses it receives from DNS servers; it also prints warnings about slow servers, dead
servers, misdelegated (``lame'') servers, and misformatted packets. dnstrace is similar in spirit to DOC
and dnswalk but is much more effective than those tools at debugging resolution problems.
In versions 1.03 and above: You can pipe dnstrace through dnstracesort(1) for human-friendly output.
dnstrace can take a long time to run, so standard procedure is to save its output in a file:
dnstrace any www.aol.com a.root-servers.net > AOL &
Then you can run dnstracesort(1) to see the results so far:
dnstracesort < AOL | less
The dnstracesort(1) output uses ul codes for boldface and underline; these codes are displayed properly
by less(1).
Beware that, as of January 2001, dnstrace produces more than 5 megabytes of output for the complete trace
of cr.yp.to starting from all the root servers. It ends up sending more than 6000 queries to more than
200 different servers.
SEE ALSO
dnsip(1), dnsipq(1), dnsmx(1), dnstxt(1), dnsqr(1), dnsq(1), dnsname(1), less(1), tinydns-get(1) http://cr.yp.to/djbdns.html dnstrace(1)