Check that www.cern.ch 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 cern.ch soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 770
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; AUTHORITY SECTION:
.			3600000	IN	NS	M.ROOT-SERVERS.NET.
.			3600000	IN	NS	E.ROOT-SERVERS.NET.
.			3600000	IN	NS	K.ROOT-SERVERS.NET.
.			3600000	IN	NS	I.ROOT-SERVERS.NET.
.			3600000	IN	NS	L.ROOT-SERVERS.NET.
.			3600000	IN	NS	G.ROOT-SERVERS.NET.
.			3600000	IN	NS	C.ROOT-SERVERS.NET.
.			3600000	IN	NS	D.ROOT-SERVERS.NET.
.			3600000	IN	NS	B.ROOT-SERVERS.NET.
.			3600000	IN	NS	H.ROOT-SERVERS.NET.
.			3600000	IN	NS	A.ROOT-SERVERS.NET.
.			3600000	IN	NS	J.ROOT-SERVERS.NET.
.			3600000	IN	NS	F.ROOT-SERVERS.NET.

;; ADDITIONAL SECTION:
A.ROOT-SERVERS.NET.	467213	IN	A	198.41.0.4
A.ROOT-SERVERS.NET.	467213	IN	AAAA	2001:503:ba3e::2:30
B.ROOT-SERVERS.NET.	425477	IN	A	192.228.79.201
C.ROOT-SERVERS.NET.	167871	IN	A	192.33.4.12
D.ROOT-SERVERS.NET.	164425	IN	A	128.8.10.90
D.ROOT-SERVERS.NET.	164425	IN	AAAA	2001:500:2d::d
E.ROOT-SERVERS.NET.	422797	IN	A	192.203.230.10
F.ROOT-SERVERS.NET.	468084	IN	A	192.5.5.241
F.ROOT-SERVERS.NET.	163820	IN	AAAA	2001:500:2f::f
G.ROOT-SERVERS.NET.	468748	IN	A	192.112.36.4
H.ROOT-SERVERS.NET.	425786	IN	A	128.63.2.53
H.ROOT-SERVERS.NET.	425786	IN	AAAA	2001:500:1::803f:235
I.ROOT-SERVERS.NET.	467320	IN	A	192.36.148.17
I.ROOT-SERVERS.NET.	467320	IN	AAAA	2001:7fe::53

;; Query time: 8 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 04:13:11 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1753
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 13

;; QUESTION SECTION:
;cern.ch.			IN	SOA

;; AUTHORITY SECTION:
ch.			172800	IN	NS	d.nic.ch.
ch.			172800	IN	NS	h.nic.ch.
ch.			172800	IN	NS	b.nic.ch.
ch.			172800	IN	NS	e.nic.ch.
ch.			172800	IN	NS	c.nic.ch.
ch.			172800	IN	NS	f.nic.ch.
ch.			172800	IN	NS	a.nic.ch.

;; ADDITIONAL SECTION:
a.nic.ch.		172800	IN	A	130.59.1.80
b.nic.ch.		172800	IN	A	130.59.211.10
c.nic.ch.		172800	IN	A	147.28.0.39
d.nic.ch.		172800	IN	A	200.160.0.5
e.nic.ch.		172800	IN	A	194.0.17.1
f.nic.ch.		172800	IN	A	194.146.106.10
h.nic.ch.		172800	IN	A	194.42.48.120
a.nic.ch.		172800	IN	AAAA	2001:620::4
b.nic.ch.		172800	IN	AAAA	2001:620::5
c.nic.ch.		172800	IN	AAAA	2001:418:1::39
d.nic.ch.		172800	IN	AAAA	2001:12ff:0:a20::5
e.nic.ch.		172800	IN	AAAA	2001:678:3::1
f.nic.ch.		172800	IN	AAAA	2001:67c:1010:2::53

;; Query time: 125 msec
;; SERVER: 2001:dc3::35#53(M.ROOT-SERVERS.NET)
;; WHEN: Fri May 18 04:13:11 2012
;; MSG SIZE  rcvd: 421

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1558
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 5

;; QUESTION SECTION:
;cern.ch.			IN	SOA

;; AUTHORITY SECTION:
cern.ch.		3600	IN	NS	scsnms.switch.ch.
cern.ch.		3600	IN	NS	ext-dns-1.cern.ch.
cern.ch.		3600	IN	NS	ext-dns-2.cern.ch.

;; ADDITIONAL SECTION:
scsnms.switch.ch.	3600	IN	A	130.59.1.30
scsnms.switch.ch.	3600	IN	A	130.59.10.30
scsnms.switch.ch.	3600	IN	AAAA	2001:620::1
ext-dns-1.cern.ch.	3600	IN	A	192.65.187.5
ext-dns-2.cern.ch.	3600	IN	A	192.91.245.85

;; Query time: 253 msec
;; SERVER: 2001:620::4#53(a.nic.ch)
;; WHEN: Fri May 18 04:13:11 2012
;; MSG SIZE  rcvd: 193

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 746
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 6

;; QUESTION SECTION:
;cern.ch.			IN	SOA

;; ANSWER SECTION:
cern.ch.		10800	IN	SOA	ext-dns-1.cern.ch. external-dns.cern.ch. 2012051703 1200 300 2419200 10800

;; AUTHORITY SECTION:
cern.ch.		10800	IN	NS	scsnms.switch.ch.
cern.ch.		10800	IN	NS	ext-dns-1.cern.ch.
cern.ch.		10800	IN	NS	ext-dns-2.cern.ch.

;; ADDITIONAL SECTION:
scsnms.switch.ch.	172800	IN	A	130.59.1.30
scsnms.switch.ch.	172800	IN	A	130.59.10.30
scsnms.switch.ch.	172800	IN	AAAA	2001:620::1
ext-dns-1.cern.ch.	10800	IN	A	192.65.187.5
ext-dns-2.cern.ch.	10800	IN	A	192.91.245.85
ext-dns-2.cern.ch.	10800	IN	AAAA	2001:1458:e008:1::2

;; Query time: 256 msec
;; SERVER: 2001:620::1#53(scsnms.switch.ch)
;; WHEN: Fri May 18 04:13:12 2012
;; MSG SIZE  rcvd: 270

HTTP

Looking for CNAME of www.cern.ch
Checking if there is a AAAA for www.cern.ch ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.cern.ch aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1288
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.cern.ch.			IN	AAAA

;; ANSWER SECTION:
www.cern.ch.		10799	IN	CNAME	webr7.cern.ch.

;; AUTHORITY SECTION:
cern.ch.		10800	IN	SOA	ext-dns-1.cern.ch. external-dns.cern.ch. 2012051703 1200 300 2419200 10800

;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 04:13:13 2012
;; MSG SIZE  rcvd: 108

Checking other options ... succeeded as www.ipv6.cern.ch.
Sending...

HEAD / HTTP/1.1
Host: www.ipv6.cern.ch
User-Agent: ipv6-survey.pl/1.97 http://www.mrp.net/IPv6_Survey.html

Reading ...

HTTP/1.1 200 OK
Date: Thu, 17 May 2012 18:43:13 GMT
Server: Apache/2.2.20 (Ubuntu)
Last-Modified: Fri, 12 Aug 2011 15:35:59 GMT
ETag: "1b60aad-915-4aa50ab8b95c0"
Accept-Ranges: bytes
Content-Length: 2325
Vary: Accept-Encoding
Content-Type: text/html

Accessed / [2001:1458:e008:2:0:0:0:2] Response: HTTP/1.1 200 OK

SMTP

MX 10 cernmxgwlb2.cern.ch
Looking for AAAA on cernmxgwlb2.cern.ch

DNS

Looking for AAAA of NS ext-dns-2.cern.ch
Querying 2001:1458:e008:1:0:0:0:2 for SOA of cern.ch over IPv6 ... successful!
Looking for AAAA of NS ext-dns-1.cern.ch
No AAAA record for ext-dns-1.cern.ch
Looking for AAAA of NS scsnms.switch.ch
Querying 2001:620:0:0:0:0:0:1 for SOA of cern.ch over IPv6 ... successful!

NTP

Looking for an A record for ntp.cern.ch
Looking for an A record for clock.cern.ch
Looking for an A record for time.cern.ch
Looking for an A record for chime.cern.ch

XMPP

Looking for a SRV record for _xmpp-client._tcp.cern.ch
Looking for a SRV record for _xmpp-server._tcp.cern.ch

Last Updated: Thu May 17 18:43:17 2012 UTC