Check that www.umich.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 umich.edu soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1959
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			170025	IN	NS	a.root-servers.net.
.			170025	IN	NS	h.root-servers.net.
.			170025	IN	NS	g.root-servers.net.
.			170025	IN	NS	c.root-servers.net.
.			170025	IN	NS	b.root-servers.net.
.			170025	IN	NS	i.root-servers.net.
.			170025	IN	NS	d.root-servers.net.
.			170025	IN	NS	e.root-servers.net.
.			170025	IN	NS	k.root-servers.net.
.			170025	IN	NS	m.root-servers.net.
.			170025	IN	NS	l.root-servers.net.
.			170025	IN	NS	f.root-servers.net.
.			170025	IN	NS	j.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	39348	IN	A	198.41.0.4
a.root-servers.net.	39348	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	516013	IN	A	192.228.79.201
c.root-servers.net.	385396	IN	A	192.33.4.12
d.root-servers.net.	343745	IN	A	128.8.10.90
d.root-servers.net.	343745	IN	AAAA	2001:500:2d::d
e.root-servers.net.	516013	IN	A	192.203.230.10
f.root-servers.net.	40219	IN	A	192.5.5.241
f.root-servers.net.	345095	IN	AAAA	2001:500:2f::f
g.root-servers.net.	40883	IN	A	192.112.36.4
h.root-servers.net.	602734	IN	A	128.63.2.53
h.root-servers.net.	602734	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	39455	IN	A	192.36.148.17
i.root-servers.net.	39455	IN	AAAA	2001:7fe::53

;; Query time: 8 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed May 23 03:04:16 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1182
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 7

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

;; AUTHORITY SECTION:
edu.			172800	IN	NS	a.edu-servers.net.
edu.			172800	IN	NS	c.edu-servers.net.
edu.			172800	IN	NS	d.edu-servers.net.
edu.			172800	IN	NS	f.edu-servers.net.
edu.			172800	IN	NS	g.edu-servers.net.
edu.			172800	IN	NS	l.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: 37 msec
;; SERVER: 2001:7fd::1#53(k.root-servers.net)
;; WHEN: Wed May 23 03:04:16 2012
;; MSG SIZE  rcvd: 262

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1081
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 3

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

;; AUTHORITY SECTION:
umich.edu.		172800	IN	NS	dns.cs.wisc.edu.
umich.edu.		172800	IN	NS	dns.itcs.umich.edu.
umich.edu.		172800	IN	NS	dns2.itcs.umich.edu.

;; ADDITIONAL SECTION:
dns.cs.wisc.edu.	172800	IN	A	128.105.2.10
dns.itcs.umich.edu.	172800	IN	A	141.211.144.15
dns2.itcs.umich.edu.	172800	IN	A	141.211.125.15

;; Query time: 187 msec
;; SERVER: 192.35.51.30#53(f.edu-servers.net)
;; WHEN: Wed May 23 03:04:16 2012
;; MSG SIZE  rcvd: 143

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1476
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 1

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

;; ANSWER SECTION:
umich.edu.		1800	IN	SOA	dns.itd.umich.edu. hostmaster.umich.edu. 2012051700 1800 900 2419200 1800

;; AUTHORITY SECTION:
umich.edu.		1800	IN	NS	dns.itd.umich.edu.
umich.edu.		1800	IN	NS	dns.cs.wisc.edu.
umich.edu.		1800	IN	NS	dns2.itd.umich.edu.

;; ADDITIONAL SECTION:
dns.cs.wisc.edu.	3600	IN	A	128.105.2.10

;; Query time: 249 msec
;; SERVER: 128.105.2.10#53(dns.cs.wisc.edu)
;; WHEN: Wed May 23 03:04:16 2012
;; MSG SIZE  rcvd: 157

HTTP

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


; <<>> DiG 9.4.1-P1 <<>> www.umich.edu aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1554
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
www.umich.edu.		1799	IN	SOA	dns.itd.umich.edu. hostmaster.umich.edu. 201205020 1800 900 2419200 1800

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed May 23 03:04:18 2012
;; MSG SIZE  rcvd: 86

Checking other options ... failed too.

SMTP

MX 0 mx1.umich.edu
Looking for AAAA on mx1.umich.edu
MX 0 mx2.umich.edu
Looking for AAAA on mx2.umich.edu
MX 0 mx3.umich.edu
Looking for AAAA on mx3.umich.edu

DNS

Looking for AAAA of NS dns.cs.wisc.edu
No AAAA record for dns.cs.wisc.edu
Looking for AAAA of NS dns.itd.umich.edu
No AAAA record for dns.itd.umich.edu
Looking for AAAA of NS dns2.itd.umich.edu
No AAAA record for dns2.itd.umich.edu

NTP

Looking for an A record for ntp.umich.edu
Looking for an A record for clock.umich.edu
Looking for an A record for time.umich.edu
Looking for an A record for chime.umich.edu

XMPP

Looking for a SRV record for _xmpp-client._tcp.umich.edu
Looking for a SRV record for _xmpp-server._tcp.umich.edu
Found XMPP server xmpp-server.l.google.com (5, 5269)
Trying to connect to 74.125.31.125 on 5269 ... Connection succeeded
Found XMPP server alt1.xmpp-server.l.google.com (20, 5269)
Trying to connect to 74.125.142.125 on 5269 ... Connection succeeded
Found XMPP server alt2.xmpp-server.l.google.com (20, 5269)
Trying to connect to 74.125.134.125 on 5269 ... Connection succeeded
Found XMPP server alt3.xmpp-server.l.google.com (20, 5269)
Trying to connect to 173.194.68.125 on 5269 ... Connection succeeded
Found XMPP server alt4.xmpp-server.l.google.com (20, 5269)
Trying to connect to 173.194.73.125 on 5269 ... Connection succeeded

Last Updated: Tue May 22 17:34:25 2012 UTC