Check that www.ist.utl.pt 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 ist.utl.pt soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1036
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			302720	IN	NS	k.root-servers.net.
.			302720	IN	NS	d.root-servers.net.
.			302720	IN	NS	b.root-servers.net.
.			302720	IN	NS	f.root-servers.net.
.			302720	IN	NS	l.root-servers.net.
.			302720	IN	NS	a.root-servers.net.
.			302720	IN	NS	m.root-servers.net.
.			302720	IN	NS	c.root-servers.net.
.			302720	IN	NS	h.root-servers.net.
.			302720	IN	NS	j.root-servers.net.
.			302720	IN	NS	e.root-servers.net.
.			302720	IN	NS	i.root-servers.net.
.			302720	IN	NS	g.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	172043	IN	A	198.41.0.4
a.root-servers.net.	172043	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	130307	IN	A	192.228.79.201
c.root-servers.net.	518091	IN	A	192.33.4.12
d.root-servers.net.	476440	IN	A	128.8.10.90
d.root-servers.net.	476440	IN	AAAA	2001:500:2d::d
e.root-servers.net.	127627	IN	A	192.203.230.10
f.root-servers.net.	172914	IN	A	192.5.5.241
f.root-servers.net.	477790	IN	AAAA	2001:500:2f::f
g.root-servers.net.	173578	IN	A	192.112.36.4
h.root-servers.net.	130616	IN	A	128.63.2.53
h.root-servers.net.	130616	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	172150	IN	A	192.36.148.17
i.root-servers.net.	172150	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon May 21 14:12:41 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 561
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 8, ADDITIONAL: 13

;; QUESTION SECTION:
;ist.utl.pt.			IN	SOA

;; AUTHORITY SECTION:
pt.			172800	IN	NS	ns.dns.br.
pt.			172800	IN	NS	ns.dns.pt.
pt.			172800	IN	NS	ns2.dns.pt.
pt.			172800	IN	NS	ns2.nic.fr.
pt.			172800	IN	NS	ns-pt.nlnetlabs.nl.
pt.			172800	IN	NS	sns-pb.isc.org.
pt.			172800	IN	NS	auth200.ns.uu.net.
pt.			172800	IN	NS	auth210.ns.uu.net.

;; ADDITIONAL SECTION:
ns.dns.br.		172800	IN	A	200.160.0.5
ns.dns.pt.		172800	IN	A	193.136.0.1
ns2.dns.pt.		172800	IN	A	193.136.2.226
ns2.nic.fr.		172800	IN	A	192.93.0.4
ns-pt.nlnetlabs.nl.	172800	IN	A	213.154.224.141
sns-pb.isc.org.		172800	IN	A	192.5.4.1
auth200.ns.uu.net.	172800	IN	A	195.129.12.82
auth210.ns.uu.net.	172800	IN	A	195.129.12.74
ns.dns.br.		172800	IN	AAAA	2001:12ff:0:a20::5
ns2.dns.pt.		172800	IN	AAAA	2001:690:a80:4001::100
ns2.nic.fr.		172800	IN	AAAA	2001:660:3005:1::1:2
ns-pt.nlnetlabs.nl.	172800	IN	AAAA	2001:7b8:206:1::4:141
sns-pb.isc.org.		172800	IN	AAAA	2001:500:2e::1

;; Query time: 250 msec
;; SERVER: 2001:500:1::803f:235#53(h.root-servers.net)
;; WHEN: Mon May 21 14:12:41 2012
;; MSG SIZE  rcvd: 497

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2044
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 8

;; QUESTION SECTION:
;ist.utl.pt.			IN	SOA

;; AUTHORITY SECTION:
utl.pt.			14400	IN	NS	ns.utl.pt.
utl.pt.			14400	IN	NS	ns1.ist.utl.pt.
utl.pt.			14400	IN	NS	ns2.ist.utl.pt.
utl.pt.			14400	IN	NS	ns2.utl.pt.

;; ADDITIONAL SECTION:
ns.utl.pt.		14400	IN	A	193.136.102.161
ns1.ist.utl.pt.		14400	IN	A	193.136.128.1
ns2.ist.utl.pt.		14400	IN	A	193.136.128.2
ns2.utl.pt.		14400	IN	A	193.136.102.162
ns.utl.pt.		14400	IN	AAAA	2001:690:2100:fffe::1
ns1.ist.utl.pt.		14400	IN	AAAA	2001:690:2100:1::53:1
ns2.ist.utl.pt.		14400	IN	AAAA	2001:690:2100:1::2
ns2.utl.pt.		14400	IN	AAAA	2001:690:2100:fffe::2

;; Query time: 331 msec
;; SERVER: 2001:7b8:206:1::4:141#53(ns-pt.nlnetlabs.nl)
;; WHEN: Mon May 21 14:12:43 2012
;; MSG SIZE  rcvd: 285

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 432
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 6

;; QUESTION SECTION:
;ist.utl.pt.			IN	SOA

;; ANSWER SECTION:
ist.utl.pt.		86400	IN	SOA	ns1.ist.utl.pt. dns-admin.ciist.ist.utl.pt. 2012051902 28800 3600 604800 86400

;; AUTHORITY SECTION:
ist.utl.pt.		86400	IN	NS	ns.utl.pt.
ist.utl.pt.		86400	IN	NS	ns1.ist.utl.pt.
ist.utl.pt.		86400	IN	NS	ns2.ist.utl.pt.

;; ADDITIONAL SECTION:
ns.utl.pt.		86400	IN	A	193.136.102.161
ns.utl.pt.		86400	IN	AAAA	2001:690:2100:fffe::1
ns1.ist.utl.pt.		86400	IN	A	193.136.128.1
ns1.ist.utl.pt.		86400	IN	AAAA	2001:690:2100:1::53:1
ns2.ist.utl.pt.		86400	IN	A	193.136.128.2
ns2.ist.utl.pt.		86400	IN	AAAA	2001:690:2100:1::2

;; Query time: 400 msec
;; SERVER: 2001:690:2100:1::53:1#53(ns1.ist.utl.pt)
;; WHEN: Mon May 21 14:12:43 2012
;; MSG SIZE  rcvd: 265

HTTP

Looking for CNAME of www.ist.utl.pt
Checking if there is a AAAA for www.ist.utl.pt ... success.
Sending...

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

Reading ...

HTTP/1.1 200 OK
Date: Mon, 21 May 2012 04:42:45 GMT
Server: Apache/2.2.3 (Debian) PHP/5.2.6-1+lenny16 with Suhosin-Patch mod_ssl/2.2.3 OpenSSL/0.9.8g
X-Powered-By: PHP/5.2.6-1+lenny16
Set-Cookie: PHPSESSID=d692c4e198f5e1b32bf1a15f21bfebeb; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding
Content-Type: text/html

Accessed / [2001:690:2100:4:0:0:c737:8803] Response: HTTP/1.1 200 OK

SMTP

MX 50 smtp.ist.utl.pt
Looking for AAAA on smtp.ist.utl.pt
Connecting to 2001:690:2100:1:0:0:0:15 ... done.
220 smtp1.ist.utl.pt ESMTP Postfix
250-smtp1.ist.utl.pt
250-PIPELINING
250-SIZE 20480000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MX 50 smtp1.ist.utl.pt
Looking for AAAA on smtp1.ist.utl.pt
MX 50 smtp2.ist.utl.pt
Looking for AAAA on smtp2.ist.utl.pt

DNS

Looking for AAAA of NS ns.utl.pt
Querying 2001:690:2100:fffe:0:0:0:1 for SOA of ist.utl.pt over IPv6 ... successful!
Looking for AAAA of NS ns2.ist.utl.pt
Querying 2001:690:2100:1:0:0:0:2 for SOA of ist.utl.pt over IPv6 ... successful!
Looking for AAAA of NS ns1.ist.utl.pt
Querying 2001:690:2100:1:0:0:53:1 for SOA of ist.utl.pt over IPv6 ... successful!

NTP

Looking for an A record for ntp.ist.utl.pt
Found an A or AAAA record. Now looking for a AAAA.
ntpdate -sq ntp.ist.utl.pt (2001:690:2100:0:0:2:0:2)
server 2001:690:2100::2:0:2, stratum 3, offset -0.010109, delay 0.42474

XMPP

Looking for a SRV record for _xmpp-client._tcp.ist.utl.pt
Looking for a SRV record for _xmpp-server._tcp.ist.utl.pt

Last Updated: Mon May 21 04:42:54 2012 UTC