Check that www.cisco.com 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 cisco.com soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1438
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

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

;; ADDITIONAL SECTION:
A.ROOT-SERVERS.NET.	459866	IN	A	198.41.0.4
A.ROOT-SERVERS.NET.	459866	IN	AAAA	2001:503:ba3e::2:30
B.ROOT-SERVERS.NET.	418130	IN	A	192.228.79.201
C.ROOT-SERVERS.NET.	160524	IN	A	192.33.4.12
D.ROOT-SERVERS.NET.	157078	IN	A	128.8.10.90
D.ROOT-SERVERS.NET.	157078	IN	AAAA	2001:500:2d::d
E.ROOT-SERVERS.NET.	415450	IN	A	192.203.230.10
F.ROOT-SERVERS.NET.	460737	IN	A	192.5.5.241
F.ROOT-SERVERS.NET.	156473	IN	AAAA	2001:500:2f::f
G.ROOT-SERVERS.NET.	461401	IN	A	192.112.36.4
H.ROOT-SERVERS.NET.	418439	IN	A	128.63.2.53
H.ROOT-SERVERS.NET.	418439	IN	AAAA	2001:500:1::803f:235
I.ROOT-SERVERS.NET.	459973	IN	A	192.36.148.17
I.ROOT-SERVERS.NET.	459973	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 06:15:38 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 911
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 14

;; QUESTION SECTION:
;cisco.com.			IN	SOA

;; AUTHORITY SECTION:
com.			172800	IN	NS	h.gtld-servers.net.
com.			172800	IN	NS	b.gtld-servers.net.
com.			172800	IN	NS	f.gtld-servers.net.
com.			172800	IN	NS	e.gtld-servers.net.
com.			172800	IN	NS	k.gtld-servers.net.
com.			172800	IN	NS	g.gtld-servers.net.
com.			172800	IN	NS	c.gtld-servers.net.
com.			172800	IN	NS	i.gtld-servers.net.
com.			172800	IN	NS	d.gtld-servers.net.
com.			172800	IN	NS	j.gtld-servers.net.
com.			172800	IN	NS	l.gtld-servers.net.
com.			172800	IN	NS	a.gtld-servers.net.
com.			172800	IN	NS	m.gtld-servers.net.

;; ADDITIONAL SECTION:
a.gtld-servers.net.	172800	IN	A	192.5.6.30
b.gtld-servers.net.	172800	IN	A	192.33.14.30
c.gtld-servers.net.	172800	IN	A	192.26.92.30
d.gtld-servers.net.	172800	IN	A	192.31.80.30
e.gtld-servers.net.	172800	IN	A	192.12.94.30
f.gtld-servers.net.	172800	IN	A	192.35.51.30
g.gtld-servers.net.	172800	IN	A	192.42.93.30
h.gtld-servers.net.	172800	IN	A	192.54.112.30
i.gtld-servers.net.	172800	IN	A	192.43.172.30
j.gtld-servers.net.	172800	IN	A	192.48.79.30
k.gtld-servers.net.	172800	IN	A	192.52.178.30
l.gtld-servers.net.	172800	IN	A	192.41.162.30
m.gtld-servers.net.	172800	IN	A	192.55.83.30
a.gtld-servers.net.	172800	IN	AAAA	2001:503:a83e::2:30

;; Query time: 130 msec
;; SERVER: 192.112.36.4#53(G.ROOT-SERVERS.NET)
;; WHEN: Fri May 18 06:15:38 2012
;; MSG SIZE  rcvd: 487

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 294
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;cisco.com.			IN	SOA

;; AUTHORITY SECTION:
cisco.com.		172800	IN	NS	ns1.cisco.com.
cisco.com.		172800	IN	NS	ns2.cisco.com.

;; ADDITIONAL SECTION:
ns1.cisco.com.		172800	IN	A	72.163.5.201
ns2.cisco.com.		172800	IN	A	64.102.255.44

;; Query time: 124 msec
;; SERVER: 192.48.79.30#53(j.gtld-servers.net)
;; WHEN: Fri May 18 06:15:39 2012
;; MSG SIZE  rcvd: 95

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 891
;; flags: qr aa ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;cisco.com.			IN	SOA

;; ANSWER SECTION:
cisco.com.		86400	IN	SOA	dns-rtp2-1-l.cisco.com. postmaster.cisco.com. 11179629 7200 1800 864000 86400

;; AUTHORITY SECTION:
cisco.com.		86400	IN	NS	ns2.cisco.com.
cisco.com.		86400	IN	NS	ns1.cisco.com.

;; ADDITIONAL SECTION:
ns1.cisco.com.		600	IN	A	72.163.5.201
ns2.cisco.com.		86400	IN	A	64.102.255.44

;; Query time: 256 msec
;; SERVER: 64.102.255.44#53(ns2.cisco.com)
;; WHEN: Fri May 18 06:15:39 2012
;; MSG SIZE  rcvd: 155

HTTP

Looking for CNAME of www.cisco.com
Warning: Might be out sourced to a web service.
Checking if there is a AAAA for www.cisco.com ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.cisco.com aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1956
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.cisco.com.			IN	AAAA

;; ANSWER SECTION:
www.cisco.com.		3599	IN	CNAME	www.cisco.com.akadns.net.
www.cisco.com.akadns.net. 299	IN	CNAME	geoprod.cisco.com.akadns.net.
geoprod.cisco.com.akadns.net. 300 IN	CNAME	wwwc.cisco.com.edgekey.net.
wwwc.cisco.com.edgekey.net. 21600 IN	CNAME	wwwc.cisco.com.edgekey.net.globalredir.akadns.net.
wwwc.cisco.com.edgekey.net.globalredir.akadns.net. 900 IN CNAME	e144.b.akamaiedge.net.

;; AUTHORITY SECTION:
b.akamaiedge.net.	1000	IN	SOA	n0b.akamaiedge.net. hostmaster.akamai.com. 1337287540 1000 1000 1000 1800

;; Query time: 6 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 06:15:40 2012
;; MSG SIZE  rcvd: 271

Checking other options ... succeeded as www.ipv6.cisco.com.
Sending...

HEAD / HTTP/1.1
Host: www.ipv6.cisco.com
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 20:45:40 GMT
Server: Apache
Set-Cookie: CP_GUTC=198.133.219.59.1337287540697359; path=/; expires=Mon, 11-May-37 20:45:40 GMT; domain=.cisco.com
Accept-Ranges: bytes
Cache-Control: max-age=0
Expires: Thu, 17 May 2012 20:45:40 GMT
Vary: Accept-Encoding
CDCHOST: ccows-sj-102
Content-Length: 22548
Content-Type: text/html

Accessed / [2001:420:80:1:0:0:0:5] Response: HTTP/1.1 200 OK

SMTP

MX 10 rcdn-mx-01.cisco.com
Looking for AAAA on rcdn-mx-01.cisco.com
MX 10 rtp-mx-01.cisco.com
Looking for AAAA on rtp-mx-01.cisco.com
MX 10 alln-mx-01.cisco.com
Looking for AAAA on alln-mx-01.cisco.com
MX 10 ams-mx-01.cisco.com
Looking for AAAA on ams-mx-01.cisco.com

DNS

Looking for AAAA of NS ns2.cisco.com
No AAAA record for ns2.cisco.com
Looking for AAAA of NS ns1.cisco.com
No AAAA record for ns1.cisco.com

NTP

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

XMPP

Looking for a SRV record for _xmpp-client._tcp.cisco.com
Found XMPP client isj3cmx.webexconnect.com (0, 5222)
XMPP client cisco.com: "isj3cmx.webexconnect.com"
Trying to connect to 66.163.36.130 on 5222 ... Connection succeeded
Looking for a SRV record for _xmpp-server._tcp.cisco.com
Found XMPP server isj3jxf.webexconnect.com (0, 5269)
XMPP server cisco.com: "isj3jxf.webexconnect.com"
Trying to connect to 66.163.36.133 on 5269 ... Connection succeeded

Last Updated: Thu May 17 20:45:45 2012 UTC