Check that www.johnshopkins.edu 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 johnshopkins.edu soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1556
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			263065	IN	NS	f.root-servers.net.
.			263065	IN	NS	c.root-servers.net.
.			263065	IN	NS	k.root-servers.net.
.			263065	IN	NS	j.root-servers.net.
.			263065	IN	NS	b.root-servers.net.
.			263065	IN	NS	a.root-servers.net.
.			263065	IN	NS	g.root-servers.net.
.			263065	IN	NS	m.root-servers.net.
.			263065	IN	NS	h.root-servers.net.
.			263065	IN	NS	i.root-servers.net.
.			263065	IN	NS	l.root-servers.net.
.			263065	IN	NS	e.root-servers.net.
.			263065	IN	NS	d.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	132388	IN	A	198.41.0.4
a.root-servers.net.	132388	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	90652	IN	A	192.228.79.201
c.root-servers.net.	478436	IN	A	192.33.4.12
d.root-servers.net.	436785	IN	A	128.8.10.90
d.root-servers.net.	436785	IN	AAAA	2001:500:2d::d
e.root-servers.net.	87972	IN	A	192.203.230.10
f.root-servers.net.	133259	IN	A	192.5.5.241
f.root-servers.net.	438135	IN	AAAA	2001:500:2f::f
g.root-servers.net.	133923	IN	A	192.112.36.4
h.root-servers.net.	90961	IN	A	128.63.2.53
h.root-servers.net.	90961	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	132495	IN	A	192.36.148.17
i.root-servers.net.	132495	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 01:13:36 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1715
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 7

;; QUESTION SECTION:
;johnshopkins.edu.		IN	SOA

;; AUTHORITY SECTION:
edu.			172800	IN	NS	a.edu-servers.net.
edu.			172800	IN	NS	c.edu-servers.net.
edu.			172800	IN	NS	d.edu-servers.net.
edu.			172800	IN	NS	f.edu-servers.net.
edu.			172800	IN	NS	g.edu-servers.net.
edu.			172800	IN	NS	l.edu-servers.net.

;; ADDITIONAL SECTION:
a.edu-servers.net.	172800	IN	A	192.5.6.30
c.edu-servers.net.	172800	IN	A	192.26.92.30
d.edu-servers.net.	172800	IN	A	192.31.80.30
f.edu-servers.net.	172800	IN	A	192.35.51.30
g.edu-servers.net.	172800	IN	A	192.42.93.30
l.edu-servers.net.	172800	IN	A	192.41.162.30
g.edu-servers.net.	172800	IN	AAAA	2001:503:cc2c::2:36

;; Query time: 31 msec
;; SERVER: 192.203.230.10#53(e.root-servers.net)
;; WHEN: Tue May 22 01:13:36 2012
;; MSG SIZE  rcvd: 272

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 450
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;johnshopkins.edu.		IN	SOA

;; AUTHORITY SECTION:
johnshopkins.edu.	172800	IN	NS	ens1.jhmi.edu.
johnshopkins.edu.	172800	IN	NS	ens1.jhu.edu.

;; ADDITIONAL SECTION:
ens1.jhmi.edu.		172800	IN	A	162.129.253.134
ens1.jhu.edu.		172800	IN	A	128.220.1.75

;; Query time: 249 msec
;; SERVER: 192.41.162.30#53(l.edu-servers.net)
;; WHEN: Tue May 22 01:13:36 2012
;; MSG SIZE  rcvd: 113

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 834
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;johnshopkins.edu.		IN	SOA

;; ANSWER SECTION:
johnshopkins.edu.	86400	IN	SOA	ens1.jhmi.edu. hostmaster.johnshopkins.edu. 2012051501 28800 7200 604800 7200

;; AUTHORITY SECTION:
johnshopkins.edu.	3600	IN	NS	ens1.jhmi.edu.
johnshopkins.edu.	3600	IN	NS	ens1.jhu.edu.

;; ADDITIONAL SECTION:
ens1.jhu.edu.		300	IN	A	128.220.1.75
ens1.jhmi.edu.		3600	IN	A	162.129.253.134

;; Query time: 249 msec
;; SERVER: 128.220.1.75#53(ens1.jhu.edu)
;; WHEN: Tue May 22 01:13:37 2012
;; MSG SIZE  rcvd: 160

HTTP

Looking for CNAME of www.johnshopkins.edu
Checking if there is a AAAA for www.johnshopkins.edu ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.johnshopkins.edu aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 950
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.johnshopkins.edu.		IN	AAAA

;; AUTHORITY SECTION:
johnshopkins.edu.	7200	IN	SOA	ens1.jhmi.edu. hostmaster.johnshopkins.edu. 2012051501 28800 7200 604800 7200

;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 01:13:38 2012
;; MSG SIZE  rcvd: 95

Checking other options ... failed too.

SMTP

MX 10 smtp.johnshopkins.edu
Looking for AAAA on smtp.johnshopkins.edu

DNS

Looking for AAAA of NS ens1.jhu.edu
No AAAA record for ens1.jhu.edu
Looking for AAAA of NS ens1.jhmi.edu
No AAAA record for ens1.jhmi.edu

NTP

Looking for an A record for ntp.johnshopkins.edu
Looking for an A record for clock.johnshopkins.edu
Looking for an A record for time.johnshopkins.edu
Looking for an A record for chime.johnshopkins.edu

XMPP

Looking for a SRV record for _xmpp-client._tcp.johnshopkins.edu
Looking for a SRV record for _xmpp-server._tcp.johnshopkins.edu

Last Updated: Mon May 21 15:43:42 2012 UTC