Check that www.vt.edu exists for IPv4 in case we have a typo on the domain name. Use dig to query the local name server (::1).


; <<>> DiG 9.4.1-P1 <<>> +trace +all vt.edu soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1709
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			147184	IN	NS	i.root-servers.net.
.			147184	IN	NS	l.root-servers.net.
.			147184	IN	NS	m.root-servers.net.
.			147184	IN	NS	d.root-servers.net.
.			147184	IN	NS	h.root-servers.net.
.			147184	IN	NS	k.root-servers.net.
.			147184	IN	NS	b.root-servers.net.
.			147184	IN	NS	c.root-servers.net.
.			147184	IN	NS	e.root-servers.net.
.			147184	IN	NS	g.root-servers.net.
.			147184	IN	NS	a.root-servers.net.
.			147184	IN	NS	f.root-servers.net.
.			147184	IN	NS	j.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	16507	IN	A	198.41.0.4
a.root-servers.net.	16507	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	493172	IN	A	192.228.79.201
c.root-servers.net.	362555	IN	A	192.33.4.12
d.root-servers.net.	320904	IN	A	128.8.10.90
d.root-servers.net.	320904	IN	AAAA	2001:500:2d::d
e.root-servers.net.	493172	IN	A	192.203.230.10
f.root-servers.net.	17378	IN	A	192.5.5.241
f.root-servers.net.	322254	IN	AAAA	2001:500:2f::f
g.root-servers.net.	18042	IN	A	192.112.36.4
h.root-servers.net.	579893	IN	A	128.63.2.53
h.root-servers.net.	579893	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	16614	IN	A	192.36.148.17
i.root-servers.net.	16614	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed May 23 09:24:57 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1993
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 7

;; QUESTION SECTION:
;vt.edu.				IN	SOA

;; AUTHORITY SECTION:
edu.			172800	IN	NS	d.edu-servers.net.
edu.			172800	IN	NS	c.edu-servers.net.
edu.			172800	IN	NS	a.edu-servers.net.
edu.			172800	IN	NS	l.edu-servers.net.
edu.			172800	IN	NS	g.edu-servers.net.
edu.			172800	IN	NS	f.edu-servers.net.

;; ADDITIONAL SECTION:
a.edu-servers.net.	172800	IN	A	192.5.6.30
c.edu-servers.net.	172800	IN	A	192.26.92.30
d.edu-servers.net.	172800	IN	A	192.31.80.30
f.edu-servers.net.	172800	IN	A	192.35.51.30
g.edu-servers.net.	172800	IN	A	192.42.93.30
l.edu-servers.net.	172800	IN	A	192.41.162.30
g.edu-servers.net.	172800	IN	AAAA	2001:503:cc2c::2:36

;; Query time: 249 msec
;; SERVER: 2001:500:2d::d#53(d.root-servers.net)
;; WHEN: Wed May 23 09:24:58 2012
;; MSG SIZE  rcvd: 259

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1094
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 5

;; QUESTION SECTION:
;vt.edu.				IN	SOA

;; AUTHORITY SECTION:
vt.edu.			172800	IN	NS	auth1.dns.cogentco.com.
vt.edu.			172800	IN	NS	auth2.dns.cogentco.com.
vt.edu.			172800	IN	NS	nomen.cns.vt.edu.
vt.edu.			172800	IN	NS	clature.cns.vt.edu.

;; ADDITIONAL SECTION:
auth1.dns.cogentco.com.	172800	IN	AAAA	2001:550:1:a::d
auth1.dns.cogentco.com.	172800	IN	A	66.28.0.14
auth2.dns.cogentco.com.	172800	IN	A	66.28.0.30
nomen.cns.vt.edu.	172800	IN	A	198.82.247.37
clature.cns.vt.edu.	172800	IN	A	198.82.247.101

;; Query time: 180 msec
;; SERVER: 192.35.51.30#53(f.edu-servers.net)
;; WHEN: Wed May 23 09:24:58 2012
;; MSG SIZE  rcvd: 218

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1003
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 8

;; QUESTION SECTION:
;vt.edu.				IN	SOA

;; ANSWER SECTION:
vt.edu.			14400	IN	SOA	yardbird.cns.vt.edu. hostmaster.vt.edu. 201205222 3600 900 604800 14400

;; AUTHORITY SECTION:
vt.edu.			14400	IN	NS	auth1.dns.cogentco.com.
vt.edu.			14400	IN	NS	auth2.dns.cogentco.com.
vt.edu.			14400	IN	NS	clature.cns.vt.edu.
vt.edu.			14400	IN	NS	nomen.cns.vt.edu.

;; ADDITIONAL SECTION:
auth1.dns.cogentco.com.	10800	IN	A	66.28.0.14
auth1.dns.cogentco.com.	43200	IN	AAAA	2001:550:1:a::d
auth2.dns.cogentco.com.	10800	IN	A	66.28.0.30
auth2.dns.cogentco.com.	43200	IN	AAAA	2001:550:1:b::d
nomen.cns.vt.edu.	14400	IN	A	198.82.247.37
nomen.cns.vt.edu.	14400	IN	AAAA	2001:468:c80:2101:0:100:0:25
clature.cns.vt.edu.	14400	IN	A	198.82.247.101
clature.cns.vt.edu.	14400	IN	AAAA	2001:468:c80:6101:0:100:0:65

;; Query time: 273 msec
;; SERVER: 2001:550:1:a::d#53(auth1.dns.cogentco.com)
;; WHEN: Wed May 23 09:24:58 2012
;; MSG SIZE  rcvd: 358

HTTP

Looking for CNAME of www.vt.edu
Checking if there is a AAAA for www.vt.edu ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.vt.edu aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 381
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.vt.edu.			IN	AAAA

;; AUTHORITY SECTION:
vt.edu.			10800	IN	SOA	yardbird.cns.vt.edu. hostmaster.vt.edu. 201205222 3600 900 604800 14400

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed May 23 09:24:59 2012
;; MSG SIZE  rcvd: 88

Checking other options ... succeeded as www.ipv6.vt.edu.
Sending...

HEAD / HTTP/1.1
Host: www.ipv6.vt.edu
User-Agent: ipv6-survey.pl/1.97 http://www.mrp.net/IPv6_Survey.html

Reading ...

HTTP/1.1 200 OK
Date: Tue, 22 May 2012 23:55:00 GMT
Server: Apache
X-RouteInfo: webhost1
Vary: Accept-Encoding
Content-Type: text/html; charset=UTF-8

Accessed / [2001:468:c80:210f:0:173:2bc6:4145] Response: HTTP/1.1 200 OK

SMTP

MX 10 inbound.smtp.vt.edu
Looking for AAAA on inbound.smtp.vt.edu
Connecting to 2001:468:c80:2106:0:240:5040:1614 ... done.
220 lennier.cc.vt.edu ESMTP Sendmail 8.13.8/8.13.8; Tue, 22 May 2012 19:55:01 -0400
250-lennier.cc.vt.edu Hello suzuka.mrp.net [IPv6:2001:44b8:60::2], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-EXPN
250-VERB
250-8BITMIME
250-SIZE 30000000
250-DSN
250-ETRN
250-AUTH DIGEST-MD5 CRAM-MD5
250-DELIVERBY
250 HELP

DNS

Looking for AAAA of NS nomen.cns.vt.edu
Querying 2001:468:c80:2101:0:100:0:25 for SOA of vt.edu over IPv6 ... successful!
Looking for AAAA of NS auth1.dns.cogentco.com
Querying 2001:550:1:a:0:0:0:d for SOA of vt.edu over IPv6 ... successful!
Looking for AAAA of NS clature.cns.vt.edu
Querying 2001:468:c80:6101:0:100:0:65 for SOA of vt.edu over IPv6 ... successful!
Looking for AAAA of NS auth2.dns.cogentco.com
Querying 2001:550:1:b:0:0:0:d for SOA of vt.edu over IPv6 ... successful!

NTP

Looking for an A record for ntp.vt.edu
Found an A or AAAA record. Now looking for a AAAA.
ntpdate -sq ntp.vt.edu (2001:468:c80:8101:0:100:0:82)
server 2001:468:c80:8101:0:100:0:82, stratum 2, offset -0.001846, delay 0.27711

XMPP

Looking for a SRV record for _xmpp-client._tcp.vt.edu
Found XMPP client im.vt.edu (10, 5222)
Trying to connect to 198.82.160.136 on 5222 ... Connection succeeded
Trying to connect to 2001:468:c80:2104:0:238:9ae6:3590 on 5222 ... Connection succeeded

Looking for a SRV record for _xmpp-server._tcp.vt.edu
Found XMPP server im.vt.edu (10, 5269)
Trying to connect to 198.82.160.136 on 5269 ... Connection succeeded
Trying to connect to 2001:468:c80:2104:0:238:9ae6:3590 on 5269 ... Connection succeeded

Last Updated: Tue May 22 23:55:08 2012 UTC