Check that www.bu.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 bu.edu soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1543
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

;; AUTHORITY SECTION:
.			3600000	IN	NS	H.ROOT-SERVERS.NET.
.			3600000	IN	NS	B.ROOT-SERVERS.NET.
.			3600000	IN	NS	K.ROOT-SERVERS.NET.
.			3600000	IN	NS	F.ROOT-SERVERS.NET.
.			3600000	IN	NS	D.ROOT-SERVERS.NET.
.			3600000	IN	NS	A.ROOT-SERVERS.NET.
.			3600000	IN	NS	E.ROOT-SERVERS.NET.
.			3600000	IN	NS	G.ROOT-SERVERS.NET.
.			3600000	IN	NS	L.ROOT-SERVERS.NET.
.			3600000	IN	NS	C.ROOT-SERVERS.NET.
.			3600000	IN	NS	I.ROOT-SERVERS.NET.
.			3600000	IN	NS	J.ROOT-SERVERS.NET.
.			3600000	IN	NS	M.ROOT-SERVERS.NET.

;; ADDITIONAL SECTION:
A.ROOT-SERVERS.NET.	480212	IN	A	198.41.0.4
A.ROOT-SERVERS.NET.	480212	IN	AAAA	2001:503:ba3e::2:30
B.ROOT-SERVERS.NET.	438476	IN	A	192.228.79.201
C.ROOT-SERVERS.NET.	180870	IN	A	192.33.4.12
D.ROOT-SERVERS.NET.	177424	IN	A	128.8.10.90
D.ROOT-SERVERS.NET.	177424	IN	AAAA	2001:500:2d::d
E.ROOT-SERVERS.NET.	435796	IN	A	192.203.230.10
F.ROOT-SERVERS.NET.	481083	IN	A	192.5.5.241
F.ROOT-SERVERS.NET.	176819	IN	AAAA	2001:500:2f::f
G.ROOT-SERVERS.NET.	481747	IN	A	192.112.36.4
H.ROOT-SERVERS.NET.	438785	IN	A	128.63.2.53
H.ROOT-SERVERS.NET.	438785	IN	AAAA	2001:500:1::803f:235
I.ROOT-SERVERS.NET.	480319	IN	A	192.36.148.17
I.ROOT-SERVERS.NET.	480319	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 00:36:32 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1624
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 7

;; QUESTION SECTION:
;bu.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	l.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.

;; 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
g.edu-servers.net.	172800	IN	AAAA	2001:503:cc2c::2:36
l.edu-servers.net.	172800	IN	A	192.41.162.30

;; Query time: 35 msec
;; SERVER: 2001:7fe::53#53(I.ROOT-SERVERS.NET)
;; WHEN: Fri May 18 00:36:32 2012
;; MSG SIZE  rcvd: 259

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1399
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 3

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

;; AUTHORITY SECTION:
bu.edu.			172800	IN	NS	edns01.bu.edu.
bu.edu.			172800	IN	NS	edns02.bu.edu.
bu.edu.			172800	IN	NS	edns03.bu.edu.

;; ADDITIONAL SECTION:
edns01.bu.edu.		172800	IN	A	128.197.253.182
edns02.bu.edu.		172800	IN	A	168.122.254.62
edns03.bu.edu.		172800	IN	A	192.12.188.130

;; Query time: 254 msec
;; SERVER: 192.26.92.30#53(c.edu-servers.net)
;; WHEN: Fri May 18 00:36:32 2012
;; MSG SIZE  rcvd: 135

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1620
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3

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

;; ANSWER SECTION:
bu.edu.			86400	IN	SOA	dns03.bu.edu. hostmaster.bu.edu. 970820071 600 300 604800 600

;; AUTHORITY SECTION:
bu.edu.			86400	IN	NS	edns01.bu.edu.
bu.edu.			86400	IN	NS	edns03.bu.edu.
bu.edu.			86400	IN	NS	edns02.bu.edu.

;; ADDITIONAL SECTION:
edns01.bu.edu.		86400	IN	A	128.197.253.182
edns02.bu.edu.		86400	IN	A	168.122.254.62
edns03.bu.edu.		86400	IN	A	192.12.188.130

;; Query time: 257 msec
;; SERVER: 192.12.188.130#53(edns03.bu.edu)
;; WHEN: Fri May 18 00:36:32 2012
;; MSG SIZE  rcvd: 188

HTTP

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


; <<>> DiG 9.4.1-P1 <<>> www.bu.edu aaaa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1211
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
bu.edu.			600	IN	SOA	dns02.bu.edu. hostmaster.bu.edu. 970820070 600 300 604800 600

;; Query time: 4 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 00:36:33 2012
;; MSG SIZE  rcvd: 81

Checking other options ... failed too.

SMTP

MX 8 relay.bu.edu
Looking for AAAA on relay.bu.edu
MX 8 relay-mx1.bu.edu
Looking for AAAA on relay-mx1.bu.edu
MX 8 relay-mx2.bu.edu
Looking for AAAA on relay-mx2.bu.edu
MX 8 relay-mx3.bu.edu
Looking for AAAA on relay-mx3.bu.edu
MX 8 relay-mx4.bu.edu
Looking for AAAA on relay-mx4.bu.edu
MX 8 relay-mx5.bu.edu
Looking for AAAA on relay-mx5.bu.edu
MX 8 relay-mx7.bu.edu
Looking for AAAA on relay-mx7.bu.edu
MX 8 relay-mx8.bu.edu
Looking for AAAA on relay-mx8.bu.edu
MX 8 relay-mx9.bu.edu
Looking for AAAA on relay-mx9.bu.edu

DNS

Looking for AAAA of NS edns02.bu.edu
No AAAA record for edns02.bu.edu
Looking for AAAA of NS edns01.bu.edu
No AAAA record for edns01.bu.edu
Looking for AAAA of NS edns03.bu.edu
No AAAA record for edns03.bu.edu

NTP

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

XMPP

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

Last Updated: Thu May 17 15:06:40 2012 UTC