Check that www.isu.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 isu.edu soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1403
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			263106	IN	NS	a.root-servers.net.
.			263106	IN	NS	m.root-servers.net.
.			263106	IN	NS	l.root-servers.net.
.			263106	IN	NS	h.root-servers.net.
.			263106	IN	NS	f.root-servers.net.
.			263106	IN	NS	d.root-servers.net.
.			263106	IN	NS	i.root-servers.net.
.			263106	IN	NS	k.root-servers.net.
.			263106	IN	NS	j.root-servers.net.
.			263106	IN	NS	e.root-servers.net.
.			263106	IN	NS	b.root-servers.net.
.			263106	IN	NS	c.root-servers.net.
.			263106	IN	NS	g.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	132429	IN	A	198.41.0.4
a.root-servers.net.	132429	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	90693	IN	A	192.228.79.201
c.root-servers.net.	478477	IN	A	192.33.4.12
d.root-servers.net.	436826	IN	A	128.8.10.90
d.root-servers.net.	436826	IN	AAAA	2001:500:2d::d
e.root-servers.net.	88013	IN	A	192.203.230.10
f.root-servers.net.	133300	IN	A	192.5.5.241
f.root-servers.net.	438176	IN	AAAA	2001:500:2f::f
g.root-servers.net.	133964	IN	A	192.112.36.4
h.root-servers.net.	91002	IN	A	128.63.2.53
h.root-servers.net.	91002	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	132536	IN	A	192.36.148.17
i.root-servers.net.	132536	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 01:12:55 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1110
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 7

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

;; AUTHORITY SECTION:
edu.			172800	IN	NS	a.edu-servers.net.
edu.			172800	IN	NS	d.edu-servers.net.
edu.			172800	IN	NS	l.edu-servers.net.
edu.			172800	IN	NS	c.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
g.edu-servers.net.	172800	IN	AAAA	2001:503:cc2c::2:36
l.edu-servers.net.	172800	IN	A	192.41.162.30

;; Query time: 35 msec
;; SERVER: 2001:7fe::53#53(i.root-servers.net)
;; WHEN: Tue May 22 01:12:55 2012
;; MSG SIZE  rcvd: 260

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1049
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

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

;; AUTHORITY SECTION:
isu.edu.		172800	IN	NS	sidney.netel.isu.edu.
isu.edu.		172800	IN	NS	alias.netel.isu.edu.

;; ADDITIONAL SECTION:
sidney.netel.isu.edu.	172800	IN	A	134.50.254.5
alias.netel.isu.edu.	172800	IN	A	134.50.57.57

;; Query time: 254 msec
;; SERVER: 192.26.92.30#53(c.edu-servers.net)
;; WHEN: Tue May 22 01:12:55 2012
;; MSG SIZE  rcvd: 104

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 498
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

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

;; ANSWER SECTION:
isu.edu.		3600	IN	SOA	sidney.netel.isu.edu. postmaster.smtp.isu.edu. 322971624 5280 3600 604800 86400

;; AUTHORITY SECTION:
isu.edu.		3600	IN	NS	sidney.netel.isu.edu.
isu.edu.		3600	IN	NS	alias.netel.isu.edu.

;; ADDITIONAL SECTION:
alias.netel.isu.edu.	3600	IN	A	134.50.57.57
sidney.netel.isu.edu.	3600	IN	A	134.50.254.5

;; Query time: 211 msec
;; SERVER: 134.50.254.5#53(sidney.netel.isu.edu)
;; WHEN: Tue May 22 01:12:56 2012
;; MSG SIZE  rcvd: 156

HTTP

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


; <<>> DiG 9.4.1-P1 <<>> www.isu.edu aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 998
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

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

;; ANSWER SECTION:
www.isu.edu.		3599	IN	CNAME	acceleration.isos.isu.edu.

;; AUTHORITY SECTION:
isos.isu.edu.		3600	IN	SOA	sidney.netel.isu.edu. postmaster.smtp.isu.edu. 322971080 10800 3600 604800 3600

;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 01:12:57 2012
;; MSG SIZE  rcvd: 126

Checking other options ... failed too.

SMTP

MX 10 aspmx.l.google.com
Looking for AAAA on aspmx.l.google.com
MX 10 alt1.aspmx.l.google.com
Looking for AAAA on alt1.aspmx.l.google.com
MX 10 alt2.aspmx.l.google.com
Looking for AAAA on alt2.aspmx.l.google.com
MX 10 aspmx2.googlemail.com
Looking for AAAA on aspmx2.googlemail.com
MX 10 aspmx3.googlemail.com
Looking for AAAA on aspmx3.googlemail.com
MX 10 aspmx4.googlemail.com
Looking for AAAA on aspmx4.googlemail.com
MX 10 aspmx5.googlemail.com
Looking for AAAA on aspmx5.googlemail.com

DNS

Looking for AAAA of NS alias.netel.isu.edu
No AAAA record for alias.netel.isu.edu
Looking for AAAA of NS sidney.netel.isu.edu
No AAAA record for sidney.netel.isu.edu

NTP

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

XMPP

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

Last Updated: Mon May 21 15:43:00 2012 UTC