Check that www.guavus.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 guavus.com soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2030
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			296311	IN	NS	d.root-servers.net.
.			296311	IN	NS	g.root-servers.net.
.			296311	IN	NS	j.root-servers.net.
.			296311	IN	NS	b.root-servers.net.
.			296311	IN	NS	e.root-servers.net.
.			296311	IN	NS	a.root-servers.net.
.			296311	IN	NS	h.root-servers.net.
.			296311	IN	NS	f.root-servers.net.
.			296311	IN	NS	i.root-servers.net.
.			296311	IN	NS	c.root-servers.net.
.			296311	IN	NS	l.root-servers.net.
.			296311	IN	NS	k.root-servers.net.
.			296311	IN	NS	m.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	165634	IN	A	198.41.0.4
a.root-servers.net.	165634	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	123898	IN	A	192.228.79.201
c.root-servers.net.	511682	IN	A	192.33.4.12
d.root-servers.net.	470031	IN	A	128.8.10.90
d.root-servers.net.	470031	IN	AAAA	2001:500:2d::d
e.root-servers.net.	121218	IN	A	192.203.230.10
f.root-servers.net.	166505	IN	A	192.5.5.241
f.root-servers.net.	471381	IN	AAAA	2001:500:2f::f
g.root-servers.net.	167169	IN	A	192.112.36.4
h.root-servers.net.	124207	IN	A	128.63.2.53
h.root-servers.net.	124207	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	165741	IN	A	192.36.148.17
i.root-servers.net.	165741	IN	AAAA	2001:7fe::53

;; Query time: 8 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon May 21 15:59:30 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1555
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 14

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

;; AUTHORITY SECTION:
com.			172800	IN	NS	b.gtld-servers.net.
com.			172800	IN	NS	g.gtld-servers.net.
com.			172800	IN	NS	c.gtld-servers.net.
com.			172800	IN	NS	l.gtld-servers.net.
com.			172800	IN	NS	h.gtld-servers.net.
com.			172800	IN	NS	d.gtld-servers.net.
com.			172800	IN	NS	e.gtld-servers.net.
com.			172800	IN	NS	i.gtld-servers.net.
com.			172800	IN	NS	k.gtld-servers.net.
com.			172800	IN	NS	f.gtld-servers.net.
com.			172800	IN	NS	a.gtld-servers.net.
com.			172800	IN	NS	m.gtld-servers.net.
com.			172800	IN	NS	j.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: 250 msec
;; SERVER: 2001:500:2d::d#53(d.root-servers.net)
;; WHEN: Mon May 21 15:59:31 2012
;; MSG SIZE  rcvd: 488

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 183
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

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

;; AUTHORITY SECTION:
guavus.com.		172800	IN	NS	ns2.rackspace.com.
guavus.com.		172800	IN	NS	ns.rackspace.com.

;; ADDITIONAL SECTION:
ns2.rackspace.com.	172800	IN	A	65.61.188.4
ns.rackspace.com.	172800	IN	A	69.20.95.4

;; Query time: 255 msec
;; SERVER: 192.26.92.30#53(c.gtld-servers.net)
;; WHEN: Mon May 21 15:59:31 2012
;; MSG SIZE  rcvd: 105

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2015
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

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

;; ANSWER SECTION:
guavus.com.		300	IN	SOA	ns.rackspace.com. hostmaster.rackspace.com. 1335247388 3600 300 1814400 300

;; AUTHORITY SECTION:
guavus.com.		86400	IN	NS	ns.rackspace.com.
guavus.com.		86400	IN	NS	ns2.rackspace.com.

;; Query time: 236 msec
;; SERVER: 69.20.95.4#53(ns.rackspace.com)
;; WHEN: Mon May 21 15:59:31 2012
;; MSG SIZE  rcvd: 120

HTTP

Looking for CNAME of www.guavus.com
Checking if there is a AAAA for www.guavus.com ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.guavus.com aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1553
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

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

;; ANSWER SECTION:
www.guavus.com.		86399	IN	CNAME	guavus.com.

;; AUTHORITY SECTION:
guavus.com.		300	IN	SOA	ns.rackspace.com. hostmaster.rackspace.com. 1335247388 3600 300 1814400 300

;; Query time: 10 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon May 21 15:59:33 2012
;; MSG SIZE  rcvd: 106

Checking other options ... failed too.

SMTP

MX 10 mx1.guavus.com
Looking for AAAA on mx1.guavus.com

DNS

Looking for AAAA of NS ns2.rackspace.com
No AAAA record for ns2.rackspace.com
Looking for AAAA of NS ns.rackspace.com
No AAAA record for ns.rackspace.com

NTP

Looking for an A record for ntp.guavus.com
Looking for an A record for clock.guavus.com
Looking for an A record for time.guavus.com
Looking for an A record for chime.guavus.com

XMPP

Looking for a SRV record for _xmpp-client._tcp.guavus.com
Looking for a SRV record for _xmpp-server._tcp.guavus.com

Last Updated: Mon May 21 06:29:36 2012 UTC