Check that www.ed.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 ed.ac.uk soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1812
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			25770	IN	NS	i.root-servers.net.
.			25770	IN	NS	j.root-servers.net.
.			25770	IN	NS	f.root-servers.net.
.			25770	IN	NS	m.root-servers.net.
.			25770	IN	NS	c.root-servers.net.
.			25770	IN	NS	k.root-servers.net.
.			25770	IN	NS	e.root-servers.net.
.			25770	IN	NS	b.root-servers.net.
.			25770	IN	NS	g.root-servers.net.
.			25770	IN	NS	a.root-servers.net.
.			25770	IN	NS	l.root-servers.net.
.			25770	IN	NS	h.root-servers.net.
.			25770	IN	NS	d.root-servers.net.

;; ADDITIONAL SECTION:
k.root-servers.net.	515288	IN	A	193.0.14.129
k.root-servers.net.	515288	IN	AAAA	2001:7fd::1
a.root-servers.net.	513762	IN	A	198.41.0.4
a.root-servers.net.	513762	IN	AAAA	2001:503:ba3e::2:30
c.root-servers.net.	214420	IN	A	192.33.4.12
d.root-servers.net.	210974	IN	A	128.8.10.90
d.root-servers.net.	210974	IN	AAAA	2001:500:2d::d
j.root-servers.net.	126032	IN	A	192.58.128.30
j.root-servers.net.	126032	IN	AAAA	2001:503:c27::2:30
b.root-servers.net.	472026	IN	A	192.228.79.201
e.root-servers.net.	469346	IN	A	192.203.230.10
i.root-servers.net.	513869	IN	A	192.36.148.17
i.root-servers.net.	513869	IN	AAAA	2001:7fe::53
f.root-servers.net.	514633	IN	A	192.5.5.241

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu May 17 15:17:22 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1028
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 11, ADDITIONAL: 14

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

;; AUTHORITY SECTION:
uk.			172800	IN	NS	ns7.nic.uk.
uk.			172800	IN	NS	ns4.nic.uk.
uk.			172800	IN	NS	nsb.nic.uk.
uk.			172800	IN	NS	nsd.nic.uk.
uk.			172800	IN	NS	nsa.nic.uk.
uk.			172800	IN	NS	ns2.nic.uk.
uk.			172800	IN	NS	ns5.nic.uk.
uk.			172800	IN	NS	ns1.nic.uk.
uk.			172800	IN	NS	ns6.nic.uk.
uk.			172800	IN	NS	nsc.nic.uk.
uk.			172800	IN	NS	ns3.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: 131 msec
;; SERVER: 192.112.36.4#53(g.root-servers.net)
;; WHEN: Thu May 17 15:17:22 2012
;; MSG SIZE  rcvd: 488

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 0

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

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

;; Query time: 333 msec
;; SERVER: 213.246.167.131#53(ns5.nic.uk)
;; WHEN: Thu May 17 15:17:23 2012
;; MSG SIZE  rcvd: 194

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1554
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 7

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

;; AUTHORITY SECTION:
ed.ac.uk.		86400	IN	NS	lewis.ucs.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	cancer.ucs.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	xlab-0.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	dns2.dcs.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	dns.dcs.ed.ac.uk.

;; ADDITIONAL SECTION:
dns.dcs.ed.ac.uk.	86400	IN	A	129.215.160.240
dns2.dcs.ed.ac.uk.	86400	IN	A	129.215.42.240
lewis.ucs.ed.ac.uk.	86400	IN	A	129.215.70.239
lewis.ucs.ed.ac.uk.	86400	IN	A	129.215.146.5
cancer.ucs.ed.ac.uk.	86400	IN	A	129.215.166.13
cancer.ucs.ed.ac.uk.	86400	IN	A	129.215.200.7
xlab-0.ed.ac.uk.	86400	IN	A	129.215.168.33

;; Query time: 311 msec
;; SERVER: 2001:630:0:47::42#53(ns4.ja.net)
;; WHEN: Thu May 17 15:17:23 2012
;; MSG SIZE  rcvd: 245

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 788
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 9

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

;; ANSWER SECTION:
ed.ac.uk.		86400	IN	SOA	dns0.ed.ac.uk. hostmaster.ed.ac.uk. 2012051700 1800 900 864000 86400

;; AUTHORITY SECTION:
ed.ac.uk.		86400	IN	NS	dns1.inf.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	cancer.ucs.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	xlab-0.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	lewis.ucs.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	dns2.inf.ed.ac.uk.
ed.ac.uk.		86400	IN	NS	dns0.inf.ed.ac.uk.

;; ADDITIONAL SECTION:
dns0.inf.ed.ac.uk.	86400	IN	A	129.215.160.240
dns1.inf.ed.ac.uk.	86400	IN	A	129.215.42.240
dns2.inf.ed.ac.uk.	86400	IN	A	129.215.42.239
dns2.inf.ed.ac.uk.	86400	IN	A	129.215.160.239
lewis.ucs.ed.ac.uk.	86400	IN	A	129.215.146.5
lewis.ucs.ed.ac.uk.	86400	IN	A	129.215.70.239
cancer.ucs.ed.ac.uk.	86400	IN	A	129.215.200.7
cancer.ucs.ed.ac.uk.	86400	IN	A	129.215.166.13
xlab-0.ed.ac.uk.	86400	IN	A	129.215.168.33

;; Query time: 322 msec
;; SERVER: 129.215.70.239#53(lewis.ucs.ed.ac.uk)
;; WHEN: Thu May 17 15:17:23 2012
;; MSG SIZE  rcvd: 349

HTTP

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


; <<>> DiG 9.4.1-P1 <<>> www.ed.ac.uk aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1133
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
ed.ac.uk.		10800	IN	SOA	dns0.ed.ac.uk. hostmaster.ed.ac.uk. 2012051700 1800 900 864000 86400

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu May 17 15:17:25 2012
;; MSG SIZE  rcvd: 82

Checking other options ... failed too.

SMTP

MX 5 dalziel.ucs.ed.ac.uk
Looking for AAAA on dalziel.ucs.ed.ac.uk
MX 5 renko.ucs.ed.ac.uk
Looking for AAAA on renko.ucs.ed.ac.uk
MX 5 pascoe.ucs.ed.ac.uk
Looking for AAAA on pascoe.ucs.ed.ac.uk

DNS

Looking for AAAA of NS lewis.ucs.ed.ac.uk
No AAAA record for lewis.ucs.ed.ac.uk
Looking for AAAA of NS xlab-0.ed.ac.uk
No AAAA record for xlab-0.ed.ac.uk
Looking for AAAA of NS dns2.inf.ed.ac.uk
No AAAA record for dns2.inf.ed.ac.uk
Looking for AAAA of NS dns1.inf.ed.ac.uk
No AAAA record for dns1.inf.ed.ac.uk
Looking for AAAA of NS dns0.inf.ed.ac.uk
No AAAA record for dns0.inf.ed.ac.uk
Looking for AAAA of NS cancer.ucs.ed.ac.uk
No AAAA record for cancer.ucs.ed.ac.uk

NTP

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

XMPP

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

Last Updated: Thu May 17 05:47:35 2012 UTC