Check that www.u-tokyo.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 u-tokyo.ac.jp soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 701
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			218238	IN	NS	d.root-servers.net.
.			218238	IN	NS	h.root-servers.net.
.			218238	IN	NS	m.root-servers.net.
.			218238	IN	NS	i.root-servers.net.
.			218238	IN	NS	a.root-servers.net.
.			218238	IN	NS	g.root-servers.net.
.			218238	IN	NS	f.root-servers.net.
.			218238	IN	NS	c.root-servers.net.
.			218238	IN	NS	e.root-servers.net.
.			218238	IN	NS	b.root-servers.net.
.			218238	IN	NS	k.root-servers.net.
.			218238	IN	NS	j.root-servers.net.
.			218238	IN	NS	l.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	87561	IN	A	198.41.0.4
a.root-servers.net.	87561	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	45825	IN	A	192.228.79.201
c.root-servers.net.	433609	IN	A	192.33.4.12
d.root-servers.net.	391958	IN	A	128.8.10.90
d.root-servers.net.	391958	IN	AAAA	2001:500:2d::d
e.root-servers.net.	43145	IN	A	192.203.230.10
f.root-servers.net.	88432	IN	A	192.5.5.241
f.root-servers.net.	393308	IN	AAAA	2001:500:2f::f
g.root-servers.net.	89096	IN	A	192.112.36.4
h.root-servers.net.	46134	IN	A	128.63.2.53
h.root-servers.net.	46134	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	87668	IN	A	192.36.148.17
i.root-servers.net.	87668	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 13:40:43 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1644
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 13

;; QUESTION SECTION:
;u-tokyo.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: 23 msec
;; SERVER: 192.203.230.10#53(e.root-servers.net)
;; WHEN: Tue May 22 13:40:43 2012
;; MSG SIZE  rcvd: 429

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1726
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 6

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

;; AUTHORITY SECTION:
u-tokyo.ac.jp.		86400	IN	NS	dns2.nc.u-tokyo.ac.jp.
u-tokyo.ac.jp.		86400	IN	NS	dns1.nc.u-tokyo.ac.jp.
u-tokyo.ac.jp.		86400	IN	NS	dns3.nc.u-tokyo.ac.jp.

;; ADDITIONAL SECTION:
dns1.nc.u-tokyo.ac.jp.	86400	IN	A	133.11.0.1
dns1.nc.u-tokyo.ac.jp.	86400	IN	AAAA	2001:200:180::35:1
dns2.nc.u-tokyo.ac.jp.	86400	IN	A	219.166.230.42
dns2.nc.u-tokyo.ac.jp.	86400	IN	AAAA	2001:380:1ab::35:2
dns3.nc.u-tokyo.ac.jp.	86400	IN	A	157.82.0.1
dns3.nc.u-tokyo.ac.jp.	86400	IN	AAAA	2001:200:180::35:3

;; Query time: 310 msec
;; SERVER: 2001:2f8:0:100::153#53(f.dns.jp)
;; WHEN: Tue May 22 13:40:43 2012
;; MSG SIZE  rcvd: 223

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 6

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

;; ANSWER SECTION:
u-tokyo.ac.jp.		43200	IN	SOA	dns1.nc.u-tokyo.ac.jp. nocstaff.nc.u-tokyo.ac.jp. 201204100 43200 7200 3600000 172800

;; AUTHORITY SECTION:
u-tokyo.ac.jp.		43200	IN	NS	dns1.nc.u-tokyo.ac.jp.
u-tokyo.ac.jp.		43200	IN	NS	dns3.nc.u-tokyo.ac.jp.
u-tokyo.ac.jp.		43200	IN	NS	dns2.nc.u-tokyo.ac.jp.

;; ADDITIONAL SECTION:
dns1.nc.u-tokyo.ac.jp.	86400	IN	A	133.11.0.1
dns1.nc.u-tokyo.ac.jp.	86400	IN	AAAA	2001:200:180::35:1
dns2.nc.u-tokyo.ac.jp.	86400	IN	A	219.166.230.42
dns2.nc.u-tokyo.ac.jp.	86400	IN	AAAA	2001:380:1ab::35:2
dns3.nc.u-tokyo.ac.jp.	86400	IN	A	157.82.0.1
dns3.nc.u-tokyo.ac.jp.	86400	IN	AAAA	2001:200:180::35:3

;; Query time: 144 msec
;; SERVER: 2001:200:180::35:1#53(dns1.nc.u-tokyo.ac.jp)
;; WHEN: Tue May 22 13:40:43 2012
;; MSG SIZE  rcvd: 268

HTTP

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


; <<>> DiG 9.4.1-P1 <<>> www.u-tokyo.ac.jp aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1494
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
u-tokyo.ac.jp.		10800	IN	SOA	dns1.nc.u-tokyo.ac.jp. nocstaff.nc.u-tokyo.ac.jp. 201204100 43200 7200 3600000 172800

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 13:40:44 2012
;; MSG SIZE  rcvd: 88

Checking other options ... failed too.

SMTP

MX 10 utmail3.nc.u-tokyo.ac.jp
Looking for AAAA on utmail3.nc.u-tokyo.ac.jp
Connecting to 2001:200:180:452:20c:29ff:fe66:6812 ... done.
220 u-tokyo.ac.jp ESMTP Sendmail 8.14.5/8.14.5; Tue, 22 May 2012 13:10:45 +0900 (JST)
250-u-tokyo.ac.jp Hello suzuka.mrp.net [IPv6:2001:44b8:60::2], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
MX 10 utmail2.nc.u-tokyo.ac.jp
Looking for AAAA on utmail2.nc.u-tokyo.ac.jp

DNS

Looking for AAAA of NS dns1.nc.u-tokyo.ac.jp
Querying 2001:200:180:0:0:0:35:1 for SOA of u-tokyo.ac.jp over IPv6 ... successful!
Looking for AAAA of NS dns2.nc.u-tokyo.ac.jp
Querying 2001:380:1ab:0:0:0:35:2 for SOA of u-tokyo.ac.jp over IPv6 ... successful!
Looking for AAAA of NS dns3.nc.u-tokyo.ac.jp
Querying 2001:200:180:0:0:0:35:3 for SOA of u-tokyo.ac.jp over IPv6 ... successful!

NTP

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

XMPP

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

Last Updated: Tue May 22 04:10:47 2012 UTC