Check that www.altarum.org 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 altarum.org soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1904
;; 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	E.ROOT-SERVERS.NET.
.			3600000	IN	NS	A.ROOT-SERVERS.NET.
.			3600000	IN	NS	I.ROOT-SERVERS.NET.
.			3600000	IN	NS	H.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	J.ROOT-SERVERS.NET.
.			3600000	IN	NS	F.ROOT-SERVERS.NET.
.			3600000	IN	NS	D.ROOT-SERVERS.NET.
.			3600000	IN	NS	M.ROOT-SERVERS.NET.
.			3600000	IN	NS	K.ROOT-SERVERS.NET.

;; ADDITIONAL SECTION:
A.ROOT-SERVERS.NET.	467231	IN	A	198.41.0.4
A.ROOT-SERVERS.NET.	467231	IN	AAAA	2001:503:ba3e::2:30
B.ROOT-SERVERS.NET.	425495	IN	A	192.228.79.201
C.ROOT-SERVERS.NET.	167889	IN	A	192.33.4.12
D.ROOT-SERVERS.NET.	164443	IN	A	128.8.10.90
D.ROOT-SERVERS.NET.	164443	IN	AAAA	2001:500:2d::d
E.ROOT-SERVERS.NET.	422815	IN	A	192.203.230.10
F.ROOT-SERVERS.NET.	468102	IN	A	192.5.5.241
F.ROOT-SERVERS.NET.	163838	IN	AAAA	2001:500:2f::f
G.ROOT-SERVERS.NET.	468766	IN	A	192.112.36.4
H.ROOT-SERVERS.NET.	425804	IN	A	128.63.2.53
H.ROOT-SERVERS.NET.	425804	IN	AAAA	2001:500:1::803f:235
I.ROOT-SERVERS.NET.	467338	IN	A	192.36.148.17
I.ROOT-SERVERS.NET.	467338	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 04:12:53 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1570
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 12

;; QUESTION SECTION:
;altarum.org.			IN	SOA

;; AUTHORITY SECTION:
org.			172800	IN	NS	a0.org.afilias-nst.info.
org.			172800	IN	NS	a2.org.afilias-nst.info.
org.			172800	IN	NS	b0.org.afilias-nst.org.
org.			172800	IN	NS	b2.org.afilias-nst.org.
org.			172800	IN	NS	c0.org.afilias-nst.info.
org.			172800	IN	NS	d0.org.afilias-nst.org.

;; ADDITIONAL SECTION:
a0.org.afilias-nst.info. 172800	IN	A	199.19.56.1
a2.org.afilias-nst.info. 172800	IN	A	199.249.112.1
b0.org.afilias-nst.org.	172800	IN	A	199.19.54.1
b2.org.afilias-nst.org.	172800	IN	A	199.249.120.1
c0.org.afilias-nst.info. 172800	IN	A	199.19.53.1
d0.org.afilias-nst.org.	172800	IN	A	199.19.57.1
a0.org.afilias-nst.info. 172800	IN	AAAA	2001:500:e::1
a2.org.afilias-nst.info. 172800	IN	AAAA	2001:500:40::1
b0.org.afilias-nst.org.	172800	IN	AAAA	2001:500:c::1
b2.org.afilias-nst.org.	172800	IN	AAAA	2001:500:48::1
c0.org.afilias-nst.info. 172800	IN	AAAA	2001:500:b::1
d0.org.afilias-nst.org.	172800	IN	AAAA	2001:500:f::1

;; Query time: 23 msec
;; SERVER: 192.203.230.10#53(E.ROOT-SERVERS.NET)
;; WHEN: Fri May 18 04:12:53 2012
;; MSG SIZE  rcvd: 434

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 167
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;altarum.org.			IN	SOA

;; AUTHORITY SECTION:
altarum.org.		86400	IN	NS	dns2.altarum.org.
altarum.org.		86400	IN	NS	dns.altarum.org.

;; ADDITIONAL SECTION:
dns.altarum.org.	86400	IN	A	204.106.17.22
dns2.altarum.org.	86400	IN	A	204.106.18.22

;; Query time: 299 msec
;; SERVER: 2001:500:e::1#53(a0.org.afilias-nst.info)
;; WHEN: Fri May 18 04:12:53 2012
;; MSG SIZE  rcvd: 98

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1214
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; QUESTION SECTION:
;altarum.org.			IN	SOA

;; ANSWER SECTION:
altarum.org.		3600	IN	SOA	dns.altarum.org. hostmaster.altarum.org. 2005091310 3600 600 1296000 3600

;; ADDITIONAL SECTION:
dns.altarum.org.	3600	IN	A	204.106.17.22

;; Query time: 531 msec
;; SERVER: 204.106.17.22#53(dns.altarum.org)
;; WHEN: Fri May 18 04:12:55 2012
;; MSG SIZE  rcvd: 96

HTTP

Looking for CNAME of www.altarum.org
Checking if there is a AAAA for www.altarum.org ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.altarum.org aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1426
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.altarum.org.		IN	AAAA

;; AUTHORITY SECTION:
altarum.org.		3600	IN	SOA	dns.altarum.org. hostmaster.altarum.org. 2005091310 3600 600 1296000 3600

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 04:12:56 2012
;; MSG SIZE  rcvd: 84

Checking other options ... failed too.

SMTP

MX 100 cluster1.us.messagelabs.com
Looking for AAAA on cluster1.us.messagelabs.com
MX 100 cluster1a.us.messagelabs.com
Looking for AAAA on cluster1a.us.messagelabs.com

DNS

Looking for AAAA of NS dns2.altarum.org
No AAAA record for dns2.altarum.org
Looking for AAAA of NS dns.altarum.org
No AAAA record for dns.altarum.org

NTP

Looking for an A record for ntp.altarum.org
Looking for an A record for clock.altarum.org
Looking for an A record for time.altarum.org
Looking for an A record for chime.altarum.org

XMPP

Looking for a SRV record for _xmpp-client._tcp.altarum.org
Looking for a SRV record for _xmpp-server._tcp.altarum.org

Last Updated: Thu May 17 18:43:00 2012 UTC