Check that www.ox.ac.uk 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 ox.ac.uk soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1519
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			215972	IN	NS	i.root-servers.net.
.			215972	IN	NS	f.root-servers.net.
.			215972	IN	NS	b.root-servers.net.
.			215972	IN	NS	m.root-servers.net.
.			215972	IN	NS	e.root-servers.net.
.			215972	IN	NS	l.root-servers.net.
.			215972	IN	NS	h.root-servers.net.
.			215972	IN	NS	j.root-servers.net.
.			215972	IN	NS	g.root-servers.net.
.			215972	IN	NS	k.root-servers.net.
.			215972	IN	NS	d.root-servers.net.
.			215972	IN	NS	a.root-servers.net.
.			215972	IN	NS	c.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	85295	IN	A	198.41.0.4
a.root-servers.net.	85295	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	43559	IN	A	192.228.79.201
c.root-servers.net.	431343	IN	A	192.33.4.12
d.root-servers.net.	389692	IN	A	128.8.10.90
d.root-servers.net.	389692	IN	AAAA	2001:500:2d::d
e.root-servers.net.	40879	IN	A	192.203.230.10
f.root-servers.net.	86166	IN	A	192.5.5.241
f.root-servers.net.	391042	IN	AAAA	2001:500:2f::f
g.root-servers.net.	86830	IN	A	192.112.36.4
h.root-servers.net.	43868	IN	A	128.63.2.53
h.root-servers.net.	43868	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	85402	IN	A	192.36.148.17
i.root-servers.net.	85402	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 14:18:29 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 354
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 11, ADDITIONAL: 14

;; QUESTION SECTION:
;ox.ac.uk.			IN	SOA

;; AUTHORITY SECTION:
uk.			172800	IN	NS	nsd.nic.uk.
uk.			172800	IN	NS	ns7.nic.uk.
uk.			172800	IN	NS	ns5.nic.uk.
uk.			172800	IN	NS	nsa.nic.uk.
uk.			172800	IN	NS	ns6.nic.uk.
uk.			172800	IN	NS	nsb.nic.uk.
uk.			172800	IN	NS	ns1.nic.uk.
uk.			172800	IN	NS	ns2.nic.uk.
uk.			172800	IN	NS	ns3.nic.uk.
uk.			172800	IN	NS	nsc.nic.uk.
uk.			172800	IN	NS	ns4.nic.uk.

;; ADDITIONAL SECTION:
ns1.nic.uk.		172800	IN	A	195.66.240.130
ns2.nic.uk.		172800	IN	A	217.79.164.131
ns3.nic.uk.		172800	IN	A	213.219.13.131
ns4.nic.uk.		172800	IN	A	194.83.244.131
ns5.nic.uk.		172800	IN	A	213.246.167.131
ns6.nic.uk.		172800	IN	A	213.248.254.130
ns7.nic.uk.		172800	IN	A	212.121.40.130
nsa.nic.uk.		172800	IN	A	156.154.100.3
nsb.nic.uk.		172800	IN	A	156.154.101.3
nsc.nic.uk.		172800	IN	A	156.154.102.3
nsd.nic.uk.		172800	IN	A	156.154.103.3
ns1.nic.uk.		172800	IN	AAAA	2a01:40:1001:35::2
ns4.nic.uk.		172800	IN	AAAA	2001:630:181:35::83
nsa.nic.uk.		172800	IN	AAAA	2001:502:ad09::3

;; Query time: 182 msec
;; SERVER: 192.228.79.201#53(b.root-servers.net)
;; WHEN: Tue May 22 14:18:29 2012
;; MSG SIZE  rcvd: 488

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 121
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 0

;; QUESTION SECTION:
;ox.ac.uk.			IN	SOA

;; AUTHORITY SECTION:
ac.uk.			172800	IN	NS	ns2.ja.net.
ac.uk.			172800	IN	NS	auth03.ns.uu.net.
ac.uk.			172800	IN	NS	ns4.ja.net.
ac.uk.			172800	IN	NS	ws-fra1.win-ip.dfn.de.
ac.uk.			172800	IN	NS	ns0.ja.net.
ac.uk.			172800	IN	NS	ns1.surfnet.nl.
ac.uk.			172800	IN	NS	ns3.ja.net.

;; Query time: 173 msec
;; SERVER: 2001:502:ad09::3#53(nsa.nic.uk)
;; WHEN: Tue May 22 14:18:30 2012
;; MSG SIZE  rcvd: 194

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 965
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 5

;; QUESTION SECTION:
;ox.ac.uk.			IN	SOA

;; AUTHORITY SECTION:
ox.ac.uk.		86400	IN	NS	ns2.ja.net.
ox.ac.uk.		86400	IN	NS	dns2.ox.ac.uk.
ox.ac.uk.		86400	IN	NS	dns1.ox.ac.uk.
ox.ac.uk.		86400	IN	NS	dns0.ox.ac.uk.

;; ADDITIONAL SECTION:
ns2.ja.net.		86400	IN	A	193.63.105.17
ns2.ja.net.		86400	IN	AAAA	2001:630:0:45::11
dns0.ox.ac.uk.		86400	IN	A	129.67.1.190
dns1.ox.ac.uk.		86400	IN	A	129.67.1.191
dns2.ox.ac.uk.		86400	IN	A	163.1.2.190

;; Query time: 285 msec
;; SERVER: 2001:630:0:47::42#53(ns4.ja.net)
;; WHEN: Tue May 22 14:18:30 2012
;; MSG SIZE  rcvd: 199

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2017
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 5

;; QUESTION SECTION:
;ox.ac.uk.			IN	SOA

;; ANSWER SECTION:
ox.ac.uk.		14400	IN	SOA	nighthawk.dns.ox.ac.uk. hostmaster.ox.ac.uk. 2012052172 3600 1800 1209600 900

;; AUTHORITY SECTION:
ox.ac.uk.		86400	IN	NS	dns0.ox.ac.uk.
ox.ac.uk.		86400	IN	NS	dns1.ox.ac.uk.
ox.ac.uk.		86400	IN	NS	dns2.ox.ac.uk.
ox.ac.uk.		86400	IN	NS	ns2.ja.net.

;; ADDITIONAL SECTION:
ns2.ja.net.		86400	IN	A	193.63.105.17
ns2.ja.net.		86400	IN	AAAA	2001:630:0:45::11
dns0.ox.ac.uk.		86400	IN	A	129.67.1.190
dns1.ox.ac.uk.		86400	IN	A	129.67.1.191
dns2.ox.ac.uk.		86400	IN	A	163.1.2.190

;; Query time: 290 msec
;; SERVER: 2001:630:0:45::11#53(ns2.ja.net)
;; WHEN: Tue May 22 14:18:30 2012
;; MSG SIZE  rcvd: 260

HTTP

Looking for CNAME of www.ox.ac.uk
Checking if there is a AAAA for www.ox.ac.uk ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.ox.ac.uk aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1115
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.ox.ac.uk.			IN	AAAA

;; AUTHORITY SECTION:
ox.ac.uk.		900	IN	SOA	nighthawk.dns.ox.ac.uk. hostmaster.ox.ac.uk. 2012052172 3600 1800 1209600 900

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 14:18:31 2012
;; MSG SIZE  rcvd: 91

Checking other options ... failed too.

SMTP

MX 9 oxmail.ox.ac.uk
Looking for AAAA on oxmail.ox.ac.uk

DNS

Looking for AAAA of NS dns0.ox.ac.uk
No AAAA record for dns0.ox.ac.uk
Looking for AAAA of NS dns2.ox.ac.uk
No AAAA record for dns2.ox.ac.uk
Looking for AAAA of NS dns1.ox.ac.uk
No AAAA record for dns1.ox.ac.uk
Looking for AAAA of NS ns2.ja.net
Querying 2001:630:0:45:0:0:0:11 for SOA of ox.ac.uk over IPv6 ... successful!

NTP

Looking for an A record for ntp.ox.ac.uk
Found an A or AAAA record. Now looking for a AAAA.
Cannot find a AAAA record for ntp.ox.ac.uk
ntpdate -sq ntp.ipv6.ox.ac.uk (2001:630:440:100:0:0:0:123)
server 2001:630:440:100::123, stratum 0, offset 0.000000, delay 0.00000
Found problem with stratum (0)

XMPP

Looking for a SRV record for _xmpp-client._tcp.ox.ac.uk
Looking for a SRV record for _xmpp-server._tcp.ox.ac.uk

Last Updated: Tue May 22 04:48:41 2012 UTC