Check that www.census.gov 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 census.gov soa
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 139
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 14

;; QUESTION SECTION:
;.				IN	NS

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

;; ADDITIONAL SECTION:
A.ROOT-SERVERS.NET.	444646	IN	A	198.41.0.4
A.ROOT-SERVERS.NET.	444646	IN	AAAA	2001:503:ba3e::2:30
B.ROOT-SERVERS.NET.	402910	IN	A	192.228.79.201
C.ROOT-SERVERS.NET.	145304	IN	A	192.33.4.12
D.ROOT-SERVERS.NET.	141858	IN	A	128.8.10.90
D.ROOT-SERVERS.NET.	141858	IN	AAAA	2001:500:2d::d
E.ROOT-SERVERS.NET.	400230	IN	A	192.203.230.10
F.ROOT-SERVERS.NET.	445517	IN	A	192.5.5.241
F.ROOT-SERVERS.NET.	141253	IN	AAAA	2001:500:2f::f
G.ROOT-SERVERS.NET.	446181	IN	A	192.112.36.4
H.ROOT-SERVERS.NET.	403219	IN	A	128.63.2.53
H.ROOT-SERVERS.NET.	403219	IN	AAAA	2001:500:1::803f:235
I.ROOT-SERVERS.NET.	444753	IN	A	192.36.148.17
I.ROOT-SERVERS.NET.	444753	IN	AAAA	2001:7fe::53

;; Query time: 7 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri May 18 10:29:18 2012
;; MSG SIZE  rcvd: 512

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1926
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3

;; QUESTION SECTION:
;census.gov.			IN	SOA

;; AUTHORITY SECTION:
gov.			172800	IN	NS	a.gov-servers.net.
gov.			172800	IN	NS	b.gov-servers.net.

;; ADDITIONAL SECTION:
a.gov-servers.net.	172800	IN	A	69.36.157.30
b.gov-servers.net.	172800	IN	A	209.112.123.30
a.gov-servers.net.	172800	IN	AAAA	2001:500:4431::2:30

;; Query time: 181 msec
;; SERVER: 192.228.79.201#53(B.ROOT-SERVERS.NET)
;; WHEN: Fri May 18 10:29:18 2012
;; MSG SIZE  rcvd: 135

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1212
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;census.gov.			IN	SOA

;; AUTHORITY SECTION:
census.gov.		86400	IN	NS	ns1e.census.gov.
census.gov.		86400	IN	NS	ns2e.census.gov.

;; ADDITIONAL SECTION:
ns1e.census.gov.	86400	IN	A	148.129.129.22
ns2e.census.gov.	86400	IN	A	148.129.75.22

;; Query time: 252 msec
;; SERVER: 2001:500:4431::2:30#53(a.gov-servers.net)
;; WHEN: Fri May 18 10:29:19 2012
;; MSG SIZE  rcvd: 98

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 682
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3

;; QUESTION SECTION:
;census.gov.			IN	SOA

;; ANSWER SECTION:
census.gov.		259200	IN	SOA	ns1e.census.gov. bind.census.gov. 2012051502 10800 10800 604800 86400

;; AUTHORITY SECTION:
census.gov.		259200	IN	NS	ns2e.census.gov.
census.gov.		259200	IN	NS	ns1e.census.gov.

;; ADDITIONAL SECTION:
ns1e.census.gov.	259200	IN	A	148.129.129.22
ns2e.census.gov.	259200	IN	A	148.129.75.22
ns2e.census.gov.	259200	IN	AAAA	2610:20:2110:102::1022

;; Query time: 248 msec
;; SERVER: 148.129.129.22#53(ns1e.census.gov)
;; WHEN: Fri May 18 10:29:19 2012
;; MSG SIZE  rcvd: 167

HTTP

Looking for CNAME of www.census.gov
Warning: Might be out sourced to a web service.
Checking if there is a AAAA for www.census.gov ... success.
Sending...

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

Reading ...

HTTP/1.1 200 OK
Server: Apache
Accept-Ranges: bytes
Content-Type: text/html
Date: Fri, 18 May 2012 00:59:20 GMT
Content-Length: 0
Connection: keep-alive

Accessed / [2600:1415:2:1:8200:0:0:e14] Response: HTTP/1.1 200 OK

SMTP

MX 50 mail2.census.gov
Looking for AAAA on mail2.census.gov
MX 50 mail1.census.gov
Looking for AAAA on mail1.census.gov

DNS

Looking for AAAA of NS ns2e.census.gov
Querying 2610:20:2110:102:0:0:0:1022 for SOA of census.gov over IPv6 ... successful!
Looking for AAAA of NS ns1e.census.gov
No AAAA record for ns1e.census.gov

NTP

Looking for an A record for ntp.census.gov
Looking for an A record for clock.census.gov
Looking for an A record for time.census.gov
Looking for an A record for chime.census.gov

XMPP

Looking for a SRV record for _xmpp-client._tcp.census.gov
Looking for a SRV record for _xmpp-server._tcp.census.gov

Last Updated: Fri May 18 00:59:25 2012 UTC