dig's answers
John Wobus
jw354 at cornell.edu
Wed Feb 15 15:25:39 UTC 2006
Hi,
dig gives me an answer that doesn't feel consistent to me. Perhaps I
don't know precisely
what it's defined to do. At the bottom of this message is all the
output for this command:
dig +trace ns1.plhhosting.com
What bothers me is there was no error message in this case, whereas the
following
commands all finished up with a specific error message:
dig +trace plhhosting.com
dig +trace some-random-name.plhhosting.com
dig +trace onintelligence.org
The message is:
dig: Couldn't find server 'ns1.plhhosting.com': No address associated
with nodename.
Nonrecursive queries to g.gtld-servers.net show that it does provide
the glue.
It seems like dig +trace is being more stringent regarding looking up
ns1.plhhosting.com as a nameserver than as the answer to my direct
query.
John Wobus
Cornell CIT
$ dig +trace ns1.plhhosting.com
; <<>> DiG 9.2.2 <<>> +trace ns1.plhhosting.com
;; global options: printcmd
. 378229 IN NS J.ROOT-SERVERS.NET.
. 378229 IN NS K.ROOT-SERVERS.NET.
. 378229 IN NS L.ROOT-SERVERS.NET.
. 378229 IN NS M.ROOT-SERVERS.NET.
. 378229 IN NS A.ROOT-SERVERS.NET.
. 378229 IN NS B.ROOT-SERVERS.NET.
. 378229 IN NS C.ROOT-SERVERS.NET.
. 378229 IN NS D.ROOT-SERVERS.NET.
. 378229 IN NS E.ROOT-SERVERS.NET.
. 378229 IN NS F.ROOT-SERVERS.NET.
. 378229 IN NS G.ROOT-SERVERS.NET.
. 378229 IN NS H.ROOT-SERVERS.NET.
. 378229 IN NS I.ROOT-SERVERS.NET.
;; Received 436 bytes from 132.236.56.250#53(132.236.56.250) in 22 ms
com. 172800 IN NS A.GTLD-SERVERS.NET.
com. 172800 IN NS G.GTLD-SERVERS.NET.
com. 172800 IN NS H.GTLD-SERVERS.NET.
com. 172800 IN NS C.GTLD-SERVERS.NET.
com. 172800 IN NS I.GTLD-SERVERS.NET.
com. 172800 IN NS B.GTLD-SERVERS.NET.
com. 172800 IN NS D.GTLD-SERVERS.NET.
com. 172800 IN NS L.GTLD-SERVERS.NET.
com. 172800 IN NS F.GTLD-SERVERS.NET.
com. 172800 IN NS J.GTLD-SERVERS.NET.
com. 172800 IN NS K.GTLD-SERVERS.NET.
com. 172800 IN NS E.GTLD-SERVERS.NET.
com. 172800 IN NS M.GTLD-SERVERS.NET.
;; Received 508 bytes from 192.58.128.30#53(J.ROOT-SERVERS.NET) in 148
ms
ns1.plhhosting.com. 172800 IN A 69.93.59.34
plhhosting.com. 172800 IN NS ns1.plhhosting.com.
plhhosting.com. 172800 IN NS ns2.plhhosting.com.
;; Received 116 bytes from 192.42.93.30#53(G.GTLD-SERVERS.NET) in 95 ms
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