Check that www.kth.se 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 kth.se soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 98
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			303833	IN	NS	d.root-servers.net.
.			303833	IN	NS	e.root-servers.net.
.			303833	IN	NS	g.root-servers.net.
.			303833	IN	NS	f.root-servers.net.
.			303833	IN	NS	b.root-servers.net.
.			303833	IN	NS	k.root-servers.net.
.			303833	IN	NS	h.root-servers.net.
.			303833	IN	NS	c.root-servers.net.
.			303833	IN	NS	a.root-servers.net.
.			303833	IN	NS	i.root-servers.net.
.			303833	IN	NS	l.root-servers.net.
.			303833	IN	NS	m.root-servers.net.
.			303833	IN	NS	j.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	173156	IN	A	198.41.0.4
a.root-servers.net.	173156	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	131420	IN	A	192.228.79.201
c.root-servers.net.	519204	IN	A	192.33.4.12
d.root-servers.net.	477553	IN	A	128.8.10.90
d.root-servers.net.	477553	IN	AAAA	2001:500:2d::d
e.root-servers.net.	128740	IN	A	192.203.230.10
f.root-servers.net.	174027	IN	A	192.5.5.241
f.root-servers.net.	478903	IN	AAAA	2001:500:2f::f
g.root-servers.net.	174691	IN	A	192.112.36.4
h.root-servers.net.	131729	IN	A	128.63.2.53
h.root-servers.net.	131729	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	173263	IN	A	192.36.148.17
i.root-servers.net.	173263	IN	AAAA	2001:7fe::53

;; Query time: 14 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon May 21 13:54:08 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1859
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 9, ADDITIONAL: 13

;; QUESTION SECTION:
;kth.se.				IN	SOA

;; AUTHORITY SECTION:
se.			172800	IN	NS	e.ns.se.
se.			172800	IN	NS	a.ns.se.
se.			172800	IN	NS	i.ns.se.
se.			172800	IN	NS	j.ns.se.
se.			172800	IN	NS	d.ns.se.
se.			172800	IN	NS	c.ns.se.
se.			172800	IN	NS	b.ns.se.
se.			172800	IN	NS	g.ns.se.
se.			172800	IN	NS	f.ns.se.

;; ADDITIONAL SECTION:
a.ns.se.		172800	IN	A	192.36.144.107
b.ns.se.		172800	IN	A	192.36.133.107
c.ns.se.		172800	IN	A	192.36.135.107
d.ns.se.		172800	IN	A	81.228.8.16
e.ns.se.		172800	IN	A	81.228.10.57
f.ns.se.		172800	IN	A	192.71.53.53
g.ns.se.		172800	IN	A	130.239.5.114
i.ns.se.		172800	IN	A	194.146.106.22
j.ns.se.		172800	IN	A	199.254.63.1
a.ns.se.		172800	IN	AAAA	2a01:3f0:0:301::53
g.ns.se.		172800	IN	AAAA	2001:6b0:e:3::1
i.ns.se.		172800	IN	AAAA	2001:67c:1010:5::53
j.ns.se.		172800	IN	AAAA	2001:500:2c::1

;; Query time: 181 msec
;; SERVER: 192.228.79.201#53(b.root-servers.net)
;; WHEN: Mon May 21 13:54:08 2012
;; MSG SIZE  rcvd: 427

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 959
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 5

;; QUESTION SECTION:
;kth.se.				IN	SOA

;; AUTHORITY SECTION:
kth.se.			86400	IN	NS	ns2.chalmers.se.
kth.se.			86400	IN	NS	nic.lth.se.
kth.se.			86400	IN	NS	a.ns.kth.se.
kth.se.			86400	IN	NS	b.ns.kth.se.

;; ADDITIONAL SECTION:
a.ns.kth.se.		86400	IN	A	130.237.72.246
b.ns.kth.se.		86400	IN	A	130.237.72.250
nic.lth.se.		86400	IN	A	130.235.20.3
ns2.chalmers.se.	86400	IN	A	129.16.253.252
ns2.chalmers.se.	86400	IN	AAAA	2001:6b0:2:20::1

;; Query time: 346 msec
;; SERVER: 81.228.10.57#53(e.ns.se)
;; WHEN: Mon May 21 13:54:09 2012
;; MSG SIZE  rcvd: 200

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 566
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 3

;; QUESTION SECTION:
;kth.se.				IN	SOA

;; ANSWER SECTION:
kth.se.			7200	IN	SOA	a.ns.kth.se. hostmaster.kth.se. 2012051700 14400 3600 604800 86400

;; AUTHORITY SECTION:
kth.se.			7200	IN	NS	nic.lth.se.
kth.se.			7200	IN	NS	b.ns.kth.se.
kth.se.			7200	IN	NS	a.ns.kth.se.
kth.se.			7200	IN	NS	ns2.chalmers.se.

;; ADDITIONAL SECTION:
a.ns.kth.se.		7200	IN	A	130.237.72.246
a.ns.kth.se.		7200	IN	AAAA	2001:6b0:1::246
b.ns.kth.se.		7200	IN	A	130.237.72.250

;; Query time: 346 msec
;; SERVER: 2001:6b0:1::246#53(a.ns.kth.se)
;; WHEN: Mon May 21 13:54:09 2012
;; MSG SIZE  rcvd: 215

HTTP

Looking for CNAME of www.kth.se
Checking if there is a AAAA for www.kth.se ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.kth.se aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1669
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.kth.se.			IN	AAAA

;; ANSWER SECTION:
www.kth.se.		59	IN	CNAME	lvs-vip-6.sys.kth.se.

;; AUTHORITY SECTION:
sys.kth.se.		600	IN	SOA	hm.ite.kth.se. hostmaster.kth.se. 2012051500 28800 7200 604800 600

;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon May 21 13:54:11 2012
;; MSG SIZE  rcvd: 110

Checking other options ... failed too.

SMTP

MX 10 mx.kth.se
Looking for AAAA on mx.kth.se
Connecting to 2001:6b0:1:1300:20e:7fff:fef0:f8bb ... done.
220 mx3.kth.se ESMTP Postfix/2.2.10 - Spammers be gone!
250-mx3.kth.se
250-PIPELINING
250-SIZE 41943040
250-ETRN
250 8BITMIME

DNS

Looking for AAAA of NS ns2.chalmers.se
Querying 2001:6b0:2:20:0:0:0:1 for SOA of kth.se over IPv6 ... successful!
Looking for AAAA of NS a.ns.kth.se
Querying 2001:6b0:1:0:0:0:0:246 for SOA of kth.se over IPv6 ... successful!
Looking for AAAA of NS nic.lth.se
No AAAA record for nic.lth.se
Looking for AAAA of NS b.ns.kth.se
No AAAA record for b.ns.kth.se

NTP

Looking for an A record for ntp.kth.se
Found an A or AAAA record. Now looking for a AAAA.
Cannot find a AAAA record for ntp.kth.se
Cannot find a AAAA record for ntp.ipv6.kth.se

XMPP

Looking for a SRV record for _xmpp-client._tcp.kth.se
Found XMPP client xmpp.sys.kth.se (0, 5222)
Trying to connect to 130.237.48.67 on 5222 ... Connection succeeded
Trying to connect to 2001:6b0:1:1300:250:56ff:fea6:3dc6 on 5222 ... Connection succeeded

Looking for a SRV record for _xmpp-server._tcp.kth.se
Found XMPP server xmpp.sys.kth.se (0, 5269)
Trying to connect to 130.237.48.67 on 5269 ... Connection succeeded
Trying to connect to 2001:6b0:1:1300:250:56ff:fea6:3dc6 on 5269 ... Connection succeeded

Last Updated: Mon May 21 04:24:24 2012 UTC