Check that www.tcd.ie 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 tcd.ie soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 277
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			217206	IN	NS	g.root-servers.net.
.			217206	IN	NS	c.root-servers.net.
.			217206	IN	NS	j.root-servers.net.
.			217206	IN	NS	h.root-servers.net.
.			217206	IN	NS	i.root-servers.net.
.			217206	IN	NS	e.root-servers.net.
.			217206	IN	NS	d.root-servers.net.
.			217206	IN	NS	b.root-servers.net.
.			217206	IN	NS	l.root-servers.net.
.			217206	IN	NS	m.root-servers.net.
.			217206	IN	NS	k.root-servers.net.
.			217206	IN	NS	f.root-servers.net.
.			217206	IN	NS	a.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	86529	IN	A	198.41.0.4
a.root-servers.net.	86529	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	44793	IN	A	192.228.79.201
c.root-servers.net.	432577	IN	A	192.33.4.12
d.root-servers.net.	390926	IN	A	128.8.10.90
d.root-servers.net.	390926	IN	AAAA	2001:500:2d::d
e.root-servers.net.	42113	IN	A	192.203.230.10
f.root-servers.net.	87400	IN	A	192.5.5.241
f.root-servers.net.	392276	IN	AAAA	2001:500:2f::f
g.root-servers.net.	88064	IN	A	192.112.36.4
h.root-servers.net.	45102	IN	A	128.63.2.53
h.root-servers.net.	45102	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	86636	IN	A	192.36.148.17
i.root-servers.net.	86636	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 13:57:55 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2037
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 8, ADDITIONAL: 10

;; QUESTION SECTION:
;tcd.ie.				IN	SOA

;; AUTHORITY SECTION:
ie.			172800	IN	NS	d.iedr.ie.
ie.			172800	IN	NS	banba.domainregistry.ie.
ie.			172800	IN	NS	gns1.domainregistry.ie.
ie.			172800	IN	NS	ns3.ns.esat.net.
ie.			172800	IN	NS	gns2.domainregistry.ie.
ie.			172800	IN	NS	ns-ie.nic.fr.
ie.			172800	IN	NS	b.iedr.ie.
ie.			172800	IN	NS	c.iedr.ie.

;; ADDITIONAL SECTION:
b.iedr.ie.		172800	IN	A	77.72.72.34
b.iedr.ie.		172800	IN	AAAA	2a01:4b0::2
c.iedr.ie.		172800	IN	A	194.146.106.98
d.iedr.ie.		172800	IN	A	77.72.229.245
ns3.ns.esat.net.	172800	IN	A	192.111.39.100
ns3.ns.esat.net.	172800	IN	AAAA	2001:7c8:2:a::64
gns1.domainregistry.ie.	172800	IN	A	198.133.199.102
gns2.domainregistry.ie.	172800	IN	A	198.133.199.103
banba.domainregistry.ie. 172800	IN	A	193.1.142.2
ns-ie.nic.fr.		172800	IN	A	192.93.0.4

;; Query time: 35 msec
;; SERVER: 2001:7fe::53#53(i.root-servers.net)
;; WHEN: Tue May 22 13:57:55 2012
;; MSG SIZE  rcvd: 389

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1842
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 7

;; QUESTION SECTION:
;tcd.ie.				IN	SOA

;; AUTHORITY SECTION:
tcd.ie.			172800	IN	NS	auth-ns1.ucd.ie.
tcd.ie.			172800	IN	NS	ns.maths.tcd.ie.
tcd.ie.			172800	IN	NS	ns.tcd.ie.
tcd.ie.			172800	IN	NS	ns1.tcd.ie.
tcd.ie.			172800	IN	NS	ns2.tcd.ie.
tcd.ie.			172800	IN	NS	sec2.authdns.ripe.net.

;; ADDITIONAL SECTION:
auth-ns1.ucd.ie.	172800	IN	A	137.43.132.53
auth-ns1.ucd.ie.	172800	IN	AAAA	2001:770:98:200::35:1
ns.maths.tcd.ie.	172800	IN	A	134.226.81.11
ns.maths.tcd.ie.	172800	IN	AAAA	2001:770:10:300::86e2:510b
ns.tcd.ie.		172800	IN	A	134.226.1.24
ns1.tcd.ie.		172800	IN	A	134.226.1.114
ns2.tcd.ie.		172800	IN	A	134.226.1.28

;; Query time: 238 msec
;; SERVER: 198.133.199.102#53(gns1.domainregistry.ie)
;; WHEN: Tue May 22 13:57:56 2012
;; MSG SIZE  rcvd: 298

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 648
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 5

;; QUESTION SECTION:
;tcd.ie.				IN	SOA

;; ANSWER SECTION:
tcd.ie.			86400	IN	SOA	ns1.tcd.ie. hostmaster.tcd.ie. 2012052117 7200 7200 1209600 86400

;; AUTHORITY SECTION:
tcd.ie.			172800	IN	NS	ns2.tcd.ie.
tcd.ie.			172800	IN	NS	ns.tcd.ie.
tcd.ie.			172800	IN	NS	ns1.tcd.ie.
tcd.ie.			172800	IN	NS	sec2.authdns.ripe.net.
tcd.ie.			172800	IN	NS	ns.maths.tcd.ie.
tcd.ie.			172800	IN	NS	auth-ns1.ucd.ie.

;; ADDITIONAL SECTION:
ns.tcd.ie.		86400	IN	A	134.226.1.24
ns1.tcd.ie.		86400	IN	A	134.226.1.114
ns2.tcd.ie.		86400	IN	A	134.226.1.28
auth-ns1.ucd.ie.	86400	IN	A	137.43.132.53
auth-ns1.ucd.ie.	7200	IN	AAAA	2001:770:98:200::35:1

;; Query time: 355 msec
;; SERVER: 2001:770:98:200::35:1#53(auth-ns1.ucd.ie)
;; WHEN: Tue May 22 13:57:56 2012
;; MSG SIZE  rcvd: 301

HTTP

Looking for CNAME of www.tcd.ie
Checking if there is a AAAA for www.tcd.ie ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.tcd.ie aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 723
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.tcd.ie.			IN	AAAA

;; ANSWER SECTION:
www.tcd.ie.		599	IN	CNAME	web.tcd.ie.

;; AUTHORITY SECTION:
web.tcd.ie.		3600	IN	SOA	hotstandby-ns0.heanet.ie. hostmaster.heanet.ie. 109 86400 7200 3600000 3600

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 13:57:58 2012
;; MSG SIZE  rcvd: 115

Checking other options ... failed too.

SMTP

MX 10 mail.global.frontbridge.com
Looking for AAAA on mail.global.frontbridge.com

DNS

Looking for AAAA of NS auth-ns1.ucd.ie
Querying 2001:770:98:200:0:0:35:1 for SOA of tcd.ie over IPv6 ... successful!
Looking for AAAA of NS ns.maths.tcd.ie
Querying 2001:770:10:300:0:0:86e2:510b for SOA of tcd.ie over IPv6 ... successful!
Looking for AAAA of NS ns1.tcd.ie
No AAAA record for ns1.tcd.ie
Looking for AAAA of NS sec2.authdns.ripe.net
Querying 2001:67c:e0:0:0:0:0:4 for SOA of tcd.ie over IPv6 ... successful!
Looking for AAAA of NS ns.tcd.ie
No AAAA record for ns.tcd.ie
Looking for AAAA of NS ns2.tcd.ie
No AAAA record for ns2.tcd.ie

NTP

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

XMPP

Looking for a SRV record for _xmpp-client._tcp.tcd.ie
Looking for a SRV record for _xmpp-server._tcp.tcd.ie

Last Updated: Tue May 22 04:28:04 2012 UTC