Check that www.ucl.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 ucl.ac.uk soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 648
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			216115	IN	NS	a.root-servers.net.
.			216115	IN	NS	b.root-servers.net.
.			216115	IN	NS	d.root-servers.net.
.			216115	IN	NS	m.root-servers.net.
.			216115	IN	NS	j.root-servers.net.
.			216115	IN	NS	i.root-servers.net.
.			216115	IN	NS	g.root-servers.net.
.			216115	IN	NS	e.root-servers.net.
.			216115	IN	NS	c.root-servers.net.
.			216115	IN	NS	k.root-servers.net.
.			216115	IN	NS	h.root-servers.net.
.			216115	IN	NS	l.root-servers.net.
.			216115	IN	NS	f.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	85438	IN	A	198.41.0.4
a.root-servers.net.	85438	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	43702	IN	A	192.228.79.201
c.root-servers.net.	431486	IN	A	192.33.4.12
d.root-servers.net.	389835	IN	A	128.8.10.90
d.root-servers.net.	389835	IN	AAAA	2001:500:2d::d
e.root-servers.net.	41022	IN	A	192.203.230.10
f.root-servers.net.	86309	IN	A	192.5.5.241
f.root-servers.net.	391185	IN	AAAA	2001:500:2f::f
g.root-servers.net.	86973	IN	A	192.112.36.4
h.root-servers.net.	44011	IN	A	128.63.2.53
h.root-servers.net.	44011	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	85545	IN	A	192.36.148.17
i.root-servers.net.	85545	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 14:16:06 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 754
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 11, ADDITIONAL: 14

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

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

;; ADDITIONAL SECTION:
ns1.nic.uk.		172800	IN	A	195.66.240.130
ns1.nic.uk.		172800	IN	AAAA	2a01:40:1001:35::2
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
ns4.nic.uk.		172800	IN	AAAA	2001:630:181:35::83
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
nsa.nic.uk.		172800	IN	AAAA	2001:502:ad09::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

;; Query time: 134 msec
;; SERVER: 2001:503:ba3e::2:30#53(a.root-servers.net)
;; WHEN: Tue May 22 14:16:06 2012
;; MSG SIZE  rcvd: 489

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 253
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 0

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

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

;; Query time: 332 msec
;; SERVER: 213.246.167.131#53(ns5.nic.uk)
;; WHEN: Tue May 22 14:16:07 2012
;; MSG SIZE  rcvd: 195

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 574
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 3

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

;; AUTHORITY SECTION:
ucl.ac.uk.		86400	IN	NS	ns1.cs.ucl.ac.uk.
ucl.ac.uk.		86400	IN	NS	link-1.ts.bcc.ac.uk.
ucl.ac.uk.		86400	IN	NS	bas-a.bcc.ac.uk.
ucl.ac.uk.		86400	IN	NS	ns2.ja.net.

;; ADDITIONAL SECTION:
ns1.cs.ucl.ac.uk.	86400	IN	A	128.16.5.32
bas-a.bcc.ac.uk.	86400	IN	A	144.82.100.41
link-1.ts.bcc.ac.uk.	86400	IN	A	144.82.100.1

;; Query time: 250 msec
;; SERVER: 198.6.1.83#53(auth03.ns.uu.net)
;; WHEN: Tue May 22 14:16:07 2012
;; MSG SIZE  rcvd: 168

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 395
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 5

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

;; ANSWER SECTION:
ucl.ac.uk.		86400	IN	SOA	bas-a.bcc.ac.uk. systems.ucl.ac.uk. 201205211 28800 7200 604800 86400

;; AUTHORITY SECTION:
ucl.ac.uk.		360000	IN	NS	bas-a.bcc.ac.uk.
ucl.ac.uk.		360000	IN	NS	link-1.ts.bcc.ac.uk.
ucl.ac.uk.		360000	IN	NS	ns1.cs.ucl.ac.uk.
ucl.ac.uk.		360000	IN	NS	ns2.ja.net.

;; ADDITIONAL SECTION:
ns1.cs.ucl.ac.uk.	37311	IN	A	128.16.5.32
ns2.ja.net.		2691	IN	A	193.63.105.17
ns2.ja.net.		2691	IN	AAAA	2001:630:0:45::11
bas-a.bcc.ac.uk.	86400	IN	A	144.82.100.41
link-1.ts.bcc.ac.uk.	86400	IN	A	144.82.100.1

;; Query time: 288 msec
;; SERVER: 144.82.100.41#53(bas-a.bcc.ac.uk)
;; WHEN: Tue May 22 14:16:08 2012
;; MSG SIZE  rcvd: 256

HTTP

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


; <<>> DiG 9.4.1-P1 <<>> www.ucl.ac.uk aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1296
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
ucl.ac.uk.		10800	IN	SOA	bas-a.bcc.ac.uk. systems.ucl.ac.uk. 201205211 28800 7200 604800 86400

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 14:16:09 2012
;; MSG SIZE  rcvd: 85

Checking other options ... failed too.

SMTP

MX 3 mx3.ucl.ac.uk
Looking for AAAA on mx3.ucl.ac.uk
MX 3 vscan-b.ucl.ac.uk
Looking for AAAA on vscan-b.ucl.ac.uk
MX 3 vscan-c.ucl.ac.uk
Looking for AAAA on vscan-c.ucl.ac.uk
MX 3 vscan-d.ucl.ac.uk
Looking for AAAA on vscan-d.ucl.ac.uk
MX 3 vscan-e.ucl.ac.uk
Looking for AAAA on vscan-e.ucl.ac.uk
MX 3 vscan-a-new.ucl.ac.uk
Looking for AAAA on vscan-a-new.ucl.ac.uk
MX 3 vscan-a.ucl.ac.uk
Looking for AAAA on vscan-a.ucl.ac.uk

DNS

Looking for AAAA of NS ns1.cs.ucl.ac.uk
No AAAA record for ns1.cs.ucl.ac.uk
Looking for AAAA of NS link-1.ts.bcc.ac.uk
No AAAA record for link-1.ts.bcc.ac.uk
Looking for AAAA of NS bas-a.bcc.ac.uk
No AAAA record for bas-a.bcc.ac.uk
Looking for AAAA of NS ns2.ja.net
Querying 2001:630:0:45:0:0:0:11 for SOA of ucl.ac.uk over IPv6 ... successful!

NTP

Looking for an A record for ntp.ucl.ac.uk
Looking for an A record for clock.ucl.ac.uk
Looking for an A record for time.ucl.ac.uk
Looking for an A record for chime.ucl.ac.uk

XMPP

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

Last Updated: Tue May 22 04:47:35 2012 UTC