Check that www.osaka-u.ac.jp 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 osaka-u.ac.jp soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2035
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			220497	IN	NS	c.root-servers.net.
.			220497	IN	NS	h.root-servers.net.
.			220497	IN	NS	g.root-servers.net.
.			220497	IN	NS	i.root-servers.net.
.			220497	IN	NS	k.root-servers.net.
.			220497	IN	NS	j.root-servers.net.
.			220497	IN	NS	f.root-servers.net.
.			220497	IN	NS	b.root-servers.net.
.			220497	IN	NS	d.root-servers.net.
.			220497	IN	NS	m.root-servers.net.
.			220497	IN	NS	e.root-servers.net.
.			220497	IN	NS	l.root-servers.net.
.			220497	IN	NS	a.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	89820	IN	A	198.41.0.4
a.root-servers.net.	89820	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	48084	IN	A	192.228.79.201
c.root-servers.net.	435868	IN	A	192.33.4.12
d.root-servers.net.	394217	IN	A	128.8.10.90
d.root-servers.net.	394217	IN	AAAA	2001:500:2d::d
e.root-servers.net.	45404	IN	A	192.203.230.10
f.root-servers.net.	90691	IN	A	192.5.5.241
f.root-servers.net.	395567	IN	AAAA	2001:500:2f::f
g.root-servers.net.	91355	IN	A	192.112.36.4
h.root-servers.net.	48393	IN	A	128.63.2.53
h.root-servers.net.	48393	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	89927	IN	A	192.36.148.17
i.root-servers.net.	89927	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 13:03:04 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 656
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 13

;; QUESTION SECTION:
;osaka-u.ac.jp.			IN	SOA

;; AUTHORITY SECTION:
jp.			172800	IN	NS	a.dns.jp.
jp.			172800	IN	NS	b.dns.jp.
jp.			172800	IN	NS	c.dns.jp.
jp.			172800	IN	NS	d.dns.jp.
jp.			172800	IN	NS	e.dns.jp.
jp.			172800	IN	NS	f.dns.jp.
jp.			172800	IN	NS	g.dns.jp.

;; ADDITIONAL SECTION:
a.dns.jp.		172800	IN	A	203.119.1.1
b.dns.jp.		172800	IN	A	202.12.30.131
c.dns.jp.		172800	IN	A	156.154.100.5
d.dns.jp.		172800	IN	A	210.138.175.244
e.dns.jp.		172800	IN	A	192.50.43.53
f.dns.jp.		172800	IN	A	150.100.6.8
g.dns.jp.		172800	IN	A	203.119.40.1
a.dns.jp.		172800	IN	AAAA	2001:dc4::1
b.dns.jp.		172800	IN	AAAA	2001:dc2::1
c.dns.jp.		172800	IN	AAAA	2001:502:ad09::5
d.dns.jp.		172800	IN	AAAA	2001:240::53
e.dns.jp.		172800	IN	AAAA	2001:200:c000::35
f.dns.jp.		172800	IN	AAAA	2001:2f8:0:100::153

;; Query time: 251 msec
;; SERVER: 2001:500:1::803f:235#53(h.root-servers.net)
;; WHEN: Tue May 22 13:03:04 2012
;; MSG SIZE  rcvd: 429

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1400
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 2

;; QUESTION SECTION:
;osaka-u.ac.jp.			IN	SOA

;; AUTHORITY SECTION:
osaka-u.ac.jp.		86400	IN	NS	sigw.sinet.ad.jp.
osaka-u.ac.jp.		86400	IN	NS	a.osaka-u.ac.jp.
osaka-u.ac.jp.		86400	IN	NS	b.osaka-u.ac.jp.

;; ADDITIONAL SECTION:
a.osaka-u.ac.jp.	86400	IN	A	133.1.192.3
b.osaka-u.ac.jp.	86400	IN	A	133.1.119.3

;; Query time: 310 msec
;; SERVER: 2001:2f8:0:100::153#53(f.dns.jp)
;; WHEN: Tue May 22 13:03:05 2012
;; MSG SIZE  rcvd: 123

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1041
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 2

;; QUESTION SECTION:
;osaka-u.ac.jp.			IN	SOA

;; ANSWER SECTION:
osaka-u.ac.jp.		259200	IN	SOA	a.osaka-u.ac.jp. root.odins.osaka-u.ac.jp. 2012051600 10800 1800 3600000 259200

;; AUTHORITY SECTION:
osaka-u.ac.jp.		259200	IN	NS	a.osaka-u.ac.jp.
osaka-u.ac.jp.		259200	IN	NS	sigw.sinet.ad.jp.
osaka-u.ac.jp.		259200	IN	NS	b.osaka-u.ac.jp.

;; ADDITIONAL SECTION:
a.osaka-u.ac.jp.	259200	IN	A	133.1.192.3
b.osaka-u.ac.jp.	259200	IN	A	133.1.119.3

;; Query time: 132 msec
;; SERVER: 133.1.192.3#53(a.osaka-u.ac.jp)
;; WHEN: Tue May 22 13:03:05 2012
;; MSG SIZE  rcvd: 170

HTTP

Looking for CNAME of www.osaka-u.ac.jp
Checking if there is a AAAA for www.osaka-u.ac.jp ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.osaka-u.ac.jp aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1630
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.osaka-u.ac.jp.		IN	AAAA

;; AUTHORITY SECTION:
osaka-u.ac.jp.		10800	IN	SOA	a.osaka-u.ac.jp. root.odins.osaka-u.ac.jp. 2012051600 10800 1800 3600000 259200

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 13:03:06 2012
;; MSG SIZE  rcvd: 84

Checking other options ... failed too.

SMTP

MX 10 vc03.odins.osaka-u.ac.jp
Looking for AAAA on vc03.odins.osaka-u.ac.jp

DNS

Looking for AAAA of NS b.osaka-u.ac.jp
No AAAA record for b.osaka-u.ac.jp
Looking for AAAA of NS a.osaka-u.ac.jp
No AAAA record for a.osaka-u.ac.jp
Looking for AAAA of NS sigw.sinet.ad.jp
No AAAA record for sigw.sinet.ad.jp

NTP

Looking for an A record for ntp.osaka-u.ac.jp
Looking for an A record for clock.osaka-u.ac.jp
Looking for an A record for time.osaka-u.ac.jp
Looking for an A record for chime.osaka-u.ac.jp

XMPP

Looking for a SRV record for _xmpp-client._tcp.osaka-u.ac.jp
Looking for a SRV record for _xmpp-server._tcp.osaka-u.ac.jp

Last Updated: Tue May 22 03:33:08 2012 UTC