Check that www.sysu.edu.cn 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 sysu.edu.cn soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1685
;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			220069	IN	NS	d.root-servers.net.
.			220069	IN	NS	a.root-servers.net.
.			220069	IN	NS	l.root-servers.net.
.			220069	IN	NS	c.root-servers.net.
.			220069	IN	NS	m.root-servers.net.
.			220069	IN	NS	g.root-servers.net.
.			220069	IN	NS	i.root-servers.net.
.			220069	IN	NS	h.root-servers.net.
.			220069	IN	NS	j.root-servers.net.
.			220069	IN	NS	f.root-servers.net.
.			220069	IN	NS	e.root-servers.net.
.			220069	IN	NS	k.root-servers.net.
.			220069	IN	NS	b.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.	89392	IN	A	198.41.0.4
a.root-servers.net.	89392	IN	AAAA	2001:503:ba3e::2:30
b.root-servers.net.	47656	IN	A	192.228.79.201
c.root-servers.net.	435440	IN	A	192.33.4.12
d.root-servers.net.	393789	IN	A	128.8.10.90
d.root-servers.net.	393789	IN	AAAA	2001:500:2d::d
e.root-servers.net.	44976	IN	A	192.203.230.10
f.root-servers.net.	90263	IN	A	192.5.5.241
f.root-servers.net.	395139	IN	AAAA	2001:500:2f::f
g.root-servers.net.	90927	IN	A	192.112.36.4
h.root-servers.net.	47965	IN	A	128.63.2.53
h.root-servers.net.	47965	IN	AAAA	2001:500:1::803f:235
i.root-servers.net.	89499	IN	A	192.36.148.17
i.root-servers.net.	89499	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 22 13:10:12 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1723
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 8

;; QUESTION SECTION:
;sysu.edu.cn.			IN	SOA

;; AUTHORITY SECTION:
cn.			172800	IN	NS	b.dns.cn.
cn.			172800	IN	NS	d.dns.cn.
cn.			172800	IN	NS	e.dns.cn.
cn.			172800	IN	NS	c.dns.cn.
cn.			172800	IN	NS	a.dns.cn.
cn.			172800	IN	NS	ns.cernet.net.

;; ADDITIONAL SECTION:
a.dns.cn.		172800	IN	A	203.119.25.1
b.dns.cn.		172800	IN	A	203.119.26.1
c.dns.cn.		172800	IN	A	203.119.27.1
d.dns.cn.		172800	IN	A	203.119.28.1
e.dns.cn.		172800	IN	A	203.119.29.1
ns.cernet.net.		172800	IN	A	202.112.0.44
a.dns.cn.		172800	IN	AAAA	2001:dc7::1
d.dns.cn.		172800	IN	AAAA	2001:dc7:1000::1

;; Query time: 249 msec
;; SERVER: 2001:500:2d::d#53(d.root-servers.net)
;; WHEN: Tue May 22 13:10:12 2012
;; MSG SIZE  rcvd: 292

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 234
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 2

;; QUESTION SECTION:
;sysu.edu.cn.			IN	SOA

;; AUTHORITY SECTION:
edu.cn.			172800	IN	NS	dns.edu.cn.
edu.cn.			172800	IN	NS	ns2.cuhk.hk.
edu.cn.			172800	IN	NS	ns2.cernet.net.
edu.cn.			172800	IN	NS	dns2.edu.cn.
edu.cn.			172800	IN	NS	deneb.dfn.de.

;; ADDITIONAL SECTION:
dns.edu.cn.		172800	IN	A	202.112.0.35
dns2.edu.cn.		172800	IN	A	202.112.0.13

;; Query time: 159 msec
;; SERVER: 202.112.0.44#53(ns.cernet.net)
;; WHEN: Tue May 22 13:10:13 2012
;; MSG SIZE  rcvd: 177

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1465
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 5

;; QUESTION SECTION:
;sysu.edu.cn.			IN	SOA

;; AUTHORITY SECTION:
sysu.edu.cn.		172800	IN	NS	NS4.sysu.edu.cn.
sysu.edu.cn.		172800	IN	NS	TAURUS.sysu.edu.cn.
sysu.edu.cn.		172800	IN	NS	ZSUSUN2.sysu.edu.cn.
sysu.edu.cn.		172800	IN	NS	NS5.sysu.edu.cn.
sysu.edu.cn.		172800	IN	NS	ZSULINK.sysu.edu.cn.

;; ADDITIONAL SECTION:
NS4.sysu.edu.cn.	172800	IN	A	211.66.128.1
NS5.sysu.edu.cn.	172800	IN	A	211.66.128.2
TAURUS.sysu.edu.cn.	172800	IN	A	202.116.64.3
ZSULINK.sysu.edu.cn.	172800	IN	A	202.116.64.1
ZSUSUN2.sysu.edu.cn.	172800	IN	A	202.116.64.2

;; Query time: 191 msec
;; SERVER: 2001:250:c006::8#53(ns2.cernet.net)
;; WHEN: Tue May 22 13:10:13 2012
;; MSG SIZE  rcvd: 210

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1877
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 5

;; QUESTION SECTION:
;sysu.edu.cn.			IN	SOA

;; ANSWER SECTION:
sysu.edu.cn.		86400	IN	SOA	zsulink.sysu.edu.cn. hostmaster.mail.sysu.edu.cn. 2011110945 10800 3600 604800 3600

;; AUTHORITY SECTION:
sysu.edu.cn.		86400	IN	NS	ns5.sysu.edu.cn.
sysu.edu.cn.		86400	IN	NS	ns4.sysu.edu.cn.
sysu.edu.cn.		86400	IN	NS	zsulink.sysu.edu.cn.
sysu.edu.cn.		86400	IN	NS	zsusun2.sysu.edu.cn.
sysu.edu.cn.		86400	IN	NS	taurus.sysu.edu.cn.

;; ADDITIONAL SECTION:
ns4.sysu.edu.cn.	86400	IN	A	211.66.128.1
ns5.sysu.edu.cn.	86400	IN	A	211.66.128.2
taurus.sysu.edu.cn.	86400	IN	A	202.116.64.3
zsulink.sysu.edu.cn.	86400	IN	A	202.116.64.1
zsusun2.sysu.edu.cn.	86400	IN	A	202.116.64.2

;; Query time: 194 msec
;; SERVER: 202.116.64.1#53(ZSULINK.sysu.edu.cn)
;; WHEN: Tue May 22 13:10:13 2012
;; MSG SIZE  rcvd: 262

HTTP

Looking for CNAME of www.sysu.edu.cn
Checking if there is a AAAA for www.sysu.edu.cn ... success.
Sending...

HEAD / HTTP/1.1
Host: www.sysu.edu.cn
User-Agent: ipv6-survey.pl/1.97 http://www.mrp.net/IPv6_Survey.html

Reading ...

HTTP/1.1 200 OK
Content-Type: text/html
Accept-Ranges: bytes
ETag: "3418484991"
Last-Modified: Sat, 31 Dec 2011 18:48:25 GMT
Content-Length: 421
Connection: close
Date: Tue, 22 May 2012 03:16:31 GMT
Server: lighttpd/1.4.28

Accessed / [2001:250:3002:10:0:0:0:9] Response: HTTP/1.1 200 OK

SMTP

MX 20 mx2.sysu.edu.cn
Looking for AAAA on mx2.sysu.edu.cn
MX 20 mx1.sysu.edu.cn
Looking for AAAA on mx1.sysu.edu.cn

DNS

Looking for AAAA of NS taurus.sysu.edu.cn
No AAAA record for taurus.sysu.edu.cn
Looking for AAAA of NS ns4.sysu.edu.cn
No AAAA record for ns4.sysu.edu.cn
Looking for AAAA of NS ZSULINK.sysu.edu.cn
No AAAA record for ZSULINK.sysu.edu.cn
Looking for AAAA of NS zsusun2.sysu.edu.cn
No AAAA record for zsusun2.sysu.edu.cn
Looking for AAAA of NS ns5.sysu.edu.cn
No AAAA record for ns5.sysu.edu.cn

NTP

Looking for an A record for ntp.sysu.edu.cn
Found an A or AAAA record. Now looking for a AAAA.
Cannot find a AAAA record for ntp.sysu.edu.cn
Cannot find a AAAA record for ntp.ipv6.sysu.edu.cn

XMPP

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

Last Updated: Tue May 22 03:40:18 2012 UTC