Check that www.harvard.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 harvard.edu soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 594
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			256135	IN	NS	a.root-servers.net.
.			256135	IN	NS	e.root-servers.net.
.			256135	IN	NS	j.root-servers.net.
.			256135	IN	NS	c.root-servers.net.
.			256135	IN	NS	h.root-servers.net.
.			256135	IN	NS	g.root-servers.net.
.			256135	IN	NS	b.root-servers.net.
.			256135	IN	NS	k.root-servers.net.
.			256135	IN	NS	m.root-servers.net.
.			256135	IN	NS	f.root-servers.net.
.			256135	IN	NS	i.root-servers.net.
.			256135	IN	NS	l.root-servers.net.
.			256135	IN	NS	d.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	125458	IN	A	198.41.0.4
a.root-servers.net.	125458	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	83722	IN	A	192.228.79.201
c.root-servers.net.	471506	IN	A	192.33.4.12
d.root-servers.net.	429855	IN	A	128.8.10.90
d.root-servers.net.	429855	IN	AAAA	2001:500:2d::d
e.root-servers.net.	81042	IN	A	192.203.230.10
f.root-servers.net.	126329	IN	A	192.5.5.241
f.root-servers.net.	431205	IN	AAAA	2001:500:2f::f
g.root-servers.net.	126993	IN	A	192.112.36.4
h.root-servers.net.	84031	IN	A	128.63.2.53
h.root-servers.net.	84031	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	125565	IN	A	192.36.148.17
i.root-servers.net.	125565	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 03:09:06 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1852
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 7

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

;; AUTHORITY SECTION:
edu.			172800	IN	NS	d.edu-servers.net.
edu.			172800	IN	NS	l.edu-servers.net.
edu.			172800	IN	NS	f.edu-servers.net.
edu.			172800	IN	NS	a.edu-servers.net.
edu.			172800	IN	NS	c.edu-servers.net.
edu.			172800	IN	NS	g.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: 125 msec
;; SERVER: 2001:dc3::35#53(m.root-servers.net)
;; WHEN: Tue May 22 03:09:06 2012
;; MSG SIZE  rcvd: 264

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1624
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 3

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

;; AUTHORITY SECTION:
harvard.edu.		172800	IN	NS	externaldns-c1.harvard.edu.
harvard.edu.		172800	IN	NS	externaldns-c2.harvard.edu.
harvard.edu.		172800	IN	NS	externaldns-c3.br.harvard.edu.

;; ADDITIONAL SECTION:
externaldns-c1.harvard.edu. 172800 IN	A	128.103.200.35
externaldns-c2.harvard.edu. 172800 IN	A	128.103.200.51
externaldns-c3.br.harvard.edu. 172800 IN A	128.119.3.185

;; Query time: 132 msec
;; SERVER: 2001:503:cc2c::2:36#53(g.edu-servers.net)
;; WHEN: Tue May 22 03:09:06 2012
;; MSG SIZE  rcvd: 167

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 839
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

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

;; ANSWER SECTION:
harvard.edu.		10800	IN	SOA	internaldns-b1.harvard.edu. netmanager.harvard.edu. 2010084806 10800 3600 2419200 3600

;; Query time: 271 msec
;; SERVER: 2607:fb60:e:2::d#53(externaldns-c2.harvard.edu)
;; WHEN: Tue May 22 03:09:07 2012
;; MSG SIZE  rcvd: 91

HTTP

Looking for CNAME of www.harvard.edu
Checking if there is a AAAA for www.harvard.edu ... success.
Sending...

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

Reading ...

HTTP/1.1 200 OK
Date: Mon, 21 May 2012 17:39:41 GMT
Server: nginx/1.2.0
Content-Type: text/html; charset=utf-8
X-Powered-By: PHP/5.3.9
X-Drupal-Cache: HIT
Etag: "1337621581-0"
Content-Language: en
X-Generator: Drupal 7 (http://drupal.org)
Cache-Control: public, max-age=180
Last-Modified: Mon, 21 May 2012 17:33:01 GMT
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Vary: Cookie,Accept-Encoding
Connection: close

Accessed / [2607:fb60:100:210:0:0:0:e6] Response: HTTP/1.1 200 OK

SMTP

MX 0 ackroyd.harvard.edu
Looking for AAAA on ackroyd.harvard.edu
MX 0 netopc.harvard.edu
Looking for AAAA on netopc.harvard.edu
MX 0 mail.br.harvard.edu
Looking for AAAA on mail.br.harvard.edu

DNS

Looking for AAAA of NS externaldns-c1.harvard.edu
Querying 2607:fb60:e:1:0:0:0:d for SOA of harvard.edu over IPv6 ... successful!
Looking for AAAA of NS externaldns-c3.br.harvard.edu
No AAAA record for externaldns-c3.br.harvard.edu
Looking for AAAA of NS externaldns-c2.harvard.edu
Querying 2607:fb60:e:2:0:0:0:d for SOA of harvard.edu over IPv6 ... successful!

NTP

Looking for an A record for ntp.harvard.edu
Found an A or AAAA record. Now looking for a AAAA.
ntpdate -sq ntp.harvard.edu (2607:fb60:a:42:0:0:0:123)
server 2607:fb60:a:42::123, stratum 0, offset 0.000000, delay 0.00000
Found problem with stratum (0)

XMPP

Looking for a SRV record for _xmpp-client._tcp.harvard.edu
Looking for a SRV record for _xmpp-server._tcp.harvard.edu

Last Updated: Mon May 21 17:39:14 2012 UTC