Check that www.ac.lk 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 ac.lk soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1101
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

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

;; ADDITIONAL SECTION:
A.ROOT-SERVERS.NET.	452397	IN	A	198.41.0.4
A.ROOT-SERVERS.NET.	452397	IN	AAAA	2001:503:ba3e::2:30
B.ROOT-SERVERS.NET.	410661	IN	A	192.228.79.201
C.ROOT-SERVERS.NET.	153055	IN	A	192.33.4.12
D.ROOT-SERVERS.NET.	149609	IN	A	128.8.10.90
D.ROOT-SERVERS.NET.	149609	IN	AAAA	2001:500:2d::d
E.ROOT-SERVERS.NET.	407981	IN	A	192.203.230.10
F.ROOT-SERVERS.NET.	453268	IN	A	192.5.5.241
F.ROOT-SERVERS.NET.	149004	IN	AAAA	2001:500:2f::f
G.ROOT-SERVERS.NET.	453932	IN	A	192.112.36.4
H.ROOT-SERVERS.NET.	410970	IN	A	128.63.2.53
H.ROOT-SERVERS.NET.	410970	IN	AAAA	2001:500:1::803f:235
I.ROOT-SERVERS.NET.	452504	IN	A	192.36.148.17
I.ROOT-SERVERS.NET.	452504	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 08:20:07 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 356
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 9, ADDITIONAL: 13

;; QUESTION SECTION:
;ac.lk.				IN	SOA

;; AUTHORITY SECTION:
lk.			172800	IN	NS	c.nic.lk.
lk.			172800	IN	NS	d.nic.lk.
lk.			172800	IN	NS	l.nic.lk.
lk.			172800	IN	NS	m.nic.lk.
lk.			172800	IN	NS	p.nic.lk.
lk.			172800	IN	NS	t.nic.lk.
lk.			172800	IN	NS	ns1.ac.lk.
lk.			172800	IN	NS	ripe.nic.lk.
lk.			172800	IN	NS	pendragon.cs.purdue.edu.

;; ADDITIONAL SECTION:
c.nic.lk.		172800	IN	A	203.143.29.3
d.nic.lk.		172800	IN	A	123.231.6.18
l.nic.lk.		172800	IN	A	192.248.8.17
m.nic.lk.		172800	IN	A	202.129.235.229
p.nic.lk.		172800	IN	A	204.61.216.27
t.nic.lk.		172800	IN	A	203.94.66.129
ns1.ac.lk.		172800	IN	A	192.248.1.162
ripe.nic.lk.		172800	IN	A	193.0.9.88
pendragon.cs.purdue.edu. 172800	IN	A	128.10.2.5
c.nic.lk.		172800	IN	AAAA	2405:5400:3:1:203:143:29:3
p.nic.lk.		172800	IN	AAAA	2001:500:14:6027:ad::1
ns1.ac.lk.		172800	IN	AAAA	2401:dd00:1::162
ripe.nic.lk.		172800	IN	AAAA	2001:67c:e0::88

;; Query time: 38 msec
;; SERVER: 2001:7fd::1#53(K.ROOT-SERVERS.NET)
;; WHEN: Fri May 18 08:20:07 2012
;; MSG SIZE  rcvd: 453

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 822
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 8

;; QUESTION SECTION:
;ac.lk.				IN	SOA

;; AUTHORITY SECTION:
ac.lk.			86400	IN	NS	ns3.ac.lk.
ac.lk.			86400	IN	NS	ns4.ac.lk.
ac.lk.			86400	IN	NS	ns1.ac.lk.
ac.lk.			86400	IN	NS	lk.cctld.authdns.ripe.net.
ac.lk.			86400	IN	NS	ns-t.nic.lk.
ac.lk.			86400	IN	NS	ns-c.nic.lk.
ac.lk.			86400	IN	NS	ns2.ac.lk.

;; ADDITIONAL SECTION:
ns1.ac.lk.		86400	IN	A	192.248.1.162
ns1.ac.lk.		86400	IN	AAAA	2401:dd00:1::162
ns2.ac.lk.		86400	IN	A	192.248.1.168
ns2.ac.lk.		86400	IN	AAAA	2401:dd00:1::168
ns3.ac.lk.		86400	IN	A	220.247.209.130
ns4.ac.lk.		86400	IN	A	202.124.166.178
ns-c.nic.lk.		86400	IN	A	203.143.29.3
ns-t.nic.lk.		86400	IN	A	203.94.66.129

;; Query time: 501 msec
;; SERVER: 202.129.235.229#53(m.nic.lk)
;; WHEN: Fri May 18 08:20:08 2012
;; MSG SIZE  rcvd: 328

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2029
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 7, ADDITIONAL: 8

;; QUESTION SECTION:
;ac.lk.				IN	SOA

;; ANSWER SECTION:
ac.lk.			43200	IN	SOA	ns1.ac.lk. noc.learn.ac.lk. 2012051002 43200 3600 1209600 10800

;; AUTHORITY SECTION:
ac.lk.			43200	IN	NS	ns2.ac.lk.
ac.lk.			43200	IN	NS	ns4.ac.lk.
ac.lk.			43200	IN	NS	lk.cctld.authdns.ripe.net.
ac.lk.			43200	IN	NS	ns1.ac.lk.
ac.lk.			43200	IN	NS	ns3.ac.lk.
ac.lk.			43200	IN	NS	ns-t.nic.lk.
ac.lk.			43200	IN	NS	ns-c.nic.lk.

;; ADDITIONAL SECTION:
ns1.ac.lk.		43200	IN	A	192.248.1.162
ns1.ac.lk.		43200	IN	AAAA	2401:dd00:1::162
ns2.ac.lk.		43200	IN	A	192.248.1.168
ns2.ac.lk.		43200	IN	AAAA	2401:dd00:1::168
ns3.ac.lk.		43200	IN	A	220.247.209.130
ns4.ac.lk.		43200	IN	A	202.124.166.178
ns-c.nic.lk.		86400	IN	A	203.143.29.3
ns-t.nic.lk.		86400	IN	A	203.94.66.129

;; Query time: 169 msec
;; SERVER: 203.94.66.129#53(ns-t.nic.lk)
;; WHEN: Fri May 18 08:20:09 2012
;; MSG SIZE  rcvd: 374

HTTP

Looking for CNAME of www.ac.lk
Checking if there is a AAAA for www.ac.lk ... success.
Sending...

HEAD / HTTP/1.1
Host: www.ac.lk
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 22:50:13 GMT
Server: Apache/2.2.22 (FreeBSD) PHP/5.3.10 with Suhosin-Patch mod_ssl/2.2.22 OpenSSL/0.9.8q DAV/2
X-Powered-By: PHP/5.3.10
Set-Cookie: SESS925fa02a03dec796cd7997ad7381946c=k5gqv8q5lk9ur092krumim9hh7; expires=Sun, 10-Jun-2012 02:23:33 GMT; path=/; domain=.ac.lk
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Last-Modified: Thu, 17 May 2012 22:50:13 GMT
Cache-Control: store, no-cache, must-revalidate
Cache-Control: post-check=0, pre-check=0
Content-Type: text/html; charset=utf-8

Accessed / [2401:dd00:1:0:0:0:0:163] Response: HTTP/1.1 200 OK

SMTP

MX 50 in-relay.ac.lk
Looking for AAAA on in-relay.ac.lk
Connecting to 2401:dd00:1:0:0:0:0:166 ... done.
220 haggala.learn.ac.lk ESMTP
250-haggala.learn.ac.lk
250-PIPELINING
250-SIZE 10485760
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MX 50 in-relay-t.ac.lk
Looking for AAAA on in-relay-t.ac.lk

DNS

Looking for AAAA of NS lk.cctld.authdns.ripe.net
Querying 2001:67c:e0:0:0:0:0:88 for SOA of ac.lk over IPv6 ... successful!
Looking for AAAA of NS ns3.ac.lk
No AAAA record for ns3.ac.lk
Looking for AAAA of NS ns-t.nic.lk
No AAAA record for ns-t.nic.lk
Looking for AAAA of NS ns1.ac.lk
Querying 2401:dd00:1:0:0:0:0:162 for SOA of ac.lk over IPv6 ... successful!
Looking for AAAA of NS ns2.ac.lk
Querying 2401:dd00:1:0:0:0:0:168 for SOA of ac.lk over IPv6 ... successful!
Looking for AAAA of NS ns4.ac.lk
No AAAA record for ns4.ac.lk
Looking for AAAA of NS ns-c.nic.lk
No AAAA record for ns-c.nic.lk

NTP

Looking for an A record for ntp.ac.lk
Found an A or AAAA record. Now looking for a AAAA.
ntpdate -sq ntp.ac.lk (2401:dd00:1:0:0:0:0:162)
server 2401:dd00:1::162, stratum 2, offset 0.089509, delay 0.36644

XMPP

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

Last Updated: Thu May 17 22:50:19 2012 UTC