Check that www.yorku.ca 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 yorku.ca soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 201
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			141221	IN	NS	h.root-servers.net.
.			141221	IN	NS	c.root-servers.net.
.			141221	IN	NS	d.root-servers.net.
.			141221	IN	NS	g.root-servers.net.
.			141221	IN	NS	f.root-servers.net.
.			141221	IN	NS	a.root-servers.net.
.			141221	IN	NS	k.root-servers.net.
.			141221	IN	NS	j.root-servers.net.
.			141221	IN	NS	b.root-servers.net.
.			141221	IN	NS	m.root-servers.net.
.			141221	IN	NS	e.root-servers.net.
.			141221	IN	NS	l.root-servers.net.
.			141221	IN	NS	i.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	10544	IN	A	198.41.0.4
a.root-servers.net.	10544	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	487209	IN	A	192.228.79.201
c.root-servers.net.	356592	IN	A	192.33.4.12
d.root-servers.net.	314941	IN	A	128.8.10.90
d.root-servers.net.	314941	IN	AAAA	2001:500:2d::d
e.root-servers.net.	487209	IN	A	192.203.230.10
f.root-servers.net.	11415	IN	A	192.5.5.241
f.root-servers.net.	316291	IN	AAAA	2001:500:2f::f
g.root-servers.net.	12079	IN	A	192.112.36.4
h.root-servers.net.	573930	IN	A	128.63.2.53
h.root-servers.net.	573930	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	10651	IN	A	192.36.148.17
i.root-servers.net.	10651	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed May 23 11:04:20 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 556
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 10, ADDITIONAL: 14

;; QUESTION SECTION:
;yorku.ca.			IN	SOA

;; AUTHORITY SECTION:
ca.			172800	IN	NS	a.ca-servers.ca.
ca.			172800	IN	NS	f.ca-servers.ca.
ca.			172800	IN	NS	c.ca-servers.ca.
ca.			172800	IN	NS	z.ca-servers.ca.
ca.			172800	IN	NS	e.ca-servers.ca.
ca.			172800	IN	NS	j.ca-servers.ca.
ca.			172800	IN	NS	l.ca-servers.ca.
ca.			172800	IN	NS	k.ca-servers.ca.
ca.			172800	IN	NS	tld.isc-sns.net.
ca.			172800	IN	NS	sns-pb.isc.org.

;; ADDITIONAL SECTION:
a.ca-servers.ca.	172800	IN	A	199.253.251.2
c.ca-servers.ca.	172800	IN	A	192.228.28.9
e.ca-servers.ca.	172800	IN	A	192.228.30.9
f.ca-servers.ca.	172800	IN	A	199.4.28.220
j.ca-servers.ca.	172800	IN	A	198.182.167.1
k.ca-servers.ca.	172800	IN	A	156.154.100.4
l.ca-servers.ca.	172800	IN	A	156.154.101.4
z.ca-servers.ca.	172800	IN	A	192.228.25.66
tld.isc-sns.net.	172800	IN	A	63.243.194.3
sns-pb.isc.org.		172800	IN	A	192.5.4.1
a.ca-servers.ca.	172800	IN	AAAA	2001:500:80:5000::2
j.ca-servers.ca.	172800	IN	AAAA	2001:500:83::1
tld.isc-sns.net.	172800	IN	AAAA	2001:5a0:10::3
sns-pb.isc.org.		172800	IN	AAAA	2001:500:2e::1

;; Query time: 185 msec
;; SERVER: 192.228.79.201#53(b.root-servers.net)
;; WHEN: Wed May 23 11:04:20 2012
;; MSG SIZE  rcvd: 494

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1277
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 2

;; QUESTION SECTION:
;yorku.ca.			IN	SOA

;; AUTHORITY SECTION:
yorku.ca.		86400	IN	NS	hanna.cac.washington.edu.
yorku.ca.		86400	IN	NS	dns21.ipns.yorku.ca.
yorku.ca.		86400	IN	NS	dns11.ipns.yorku.ca.

;; ADDITIONAL SECTION:
dns11.ipns.yorku.ca.	86400	IN	A	130.63.9.2
dns21.ipns.yorku.ca.	86400	IN	A	130.63.10.2

;; Query time: 254 msec
;; SERVER: 192.228.28.9#53(c.ca-servers.ca)
;; WHEN: Wed May 23 11:04:20 2012
;; MSG SIZE  rcvd: 141

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1307
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 2

;; QUESTION SECTION:
;yorku.ca.			IN	SOA

;; ANSWER SECTION:
yorku.ca.		21600	IN	SOA	dns11.ipns.yorku.ca. hostmaster.yorku.ca. 355482221 1200 180 1209600 3600

;; AUTHORITY SECTION:
yorku.ca.		21600	IN	NS	dns11.ipns.yorku.ca.
yorku.ca.		21600	IN	NS	hanna.cac.washington.edu.
yorku.ca.		21600	IN	NS	dns21.ipns.yorku.ca.

;; ADDITIONAL SECTION:
dns11.ipns.yorku.ca.	21600	IN	A	130.63.9.2
dns21.ipns.yorku.ca.	21600	IN	A	130.63.10.2

;; Query time: 239 msec
;; SERVER: 130.63.10.2#53(dns21.ipns.yorku.ca)
;; WHEN: Wed May 23 11:04:21 2012
;; MSG SIZE  rcvd: 188

HTTP

Looking for CNAME of www.yorku.ca
Checking if there is a AAAA for www.yorku.ca ... FAILED.


; <<>> DiG 9.4.1-P1 <<>> www.yorku.ca aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 720
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;www.yorku.ca.			IN	AAAA

;; ANSWER SECTION:
www.yorku.ca.		299	IN	CNAME	optera.ccs.yorku.ca.

;; AUTHORITY SECTION:
ccs.yorku.ca.		3600	IN	SOA	dns11.ipns.yorku.ca. hostmaster.yorku.ca. 355482222 1200 180 1209600 3600

;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed May 23 11:04:22 2012
;; MSG SIZE  rcvd: 113

Checking other options ... failed too.

SMTP

MX 5 dionysia.ccs.yorku.ca
Looking for AAAA on dionysia.ccs.yorku.ca
MX 5 maildelivery.yorku.ca
Looking for AAAA on maildelivery.yorku.ca

DNS

Looking for AAAA of NS dns11.ipns.yorku.ca
No AAAA record for dns11.ipns.yorku.ca
Looking for AAAA of NS hanna.cac.washington.edu
No AAAA record for hanna.cac.washington.edu
Looking for AAAA of NS dns21.ipns.yorku.ca
No AAAA record for dns21.ipns.yorku.ca

NTP

Looking for an A record for ntp.yorku.ca
Looking for an A record for clock.yorku.ca
Looking for an A record for time.yorku.ca
Looking for an A record for chime.yorku.ca

XMPP

Looking for a SRV record for _xmpp-client._tcp.yorku.ca
Looking for a SRV record for _xmpp-server._tcp.yorku.ca

Last Updated: Wed May 23 01:34:26 2012 UTC