[gregp@cerberus] /home/gregp: dnstracer -q ptr 2.137.196.67.in-addr.arpa.
Tracing to 2.137.196.67.in-addr.arpa[#ptr] via 204.14.16.12, maximum of 3 retries
204.14.16.12 (204.14.16.12)
 |\___ NS1.NAC.NET [196.67.in-addr.arpa] (207.99.0.41)
 |     |\___ ns1.sizone.org [2.137.196.67.in-addr.arpa] (67.196.137.163) Got authoritative answer
 |      \___ ns3.heavycomputing.ca [2.137.196.67.in-addr.arpa] (209.44.123.227) Refers backwards
  \___ NS2.NAC.NET [196.67.in-addr.arpa] (207.99.0.42)
       |\___ ns3.heavycomputing.ca [2.137.196.67.in-addr.arpa] (209.44.123.227) (cached)
        \___ ns1.sizone.org [2.137.196.67.in-addr.arpa] (67.196.137.163) (cached)
[gregp@cerberus] /home/gregp: dig @209.44.123.227 2.137.196.67.in-addr.arpa ptr

; <<>> DiG 9.3.4 <<>> @209.44.123.227 2.137.196.67.in-addr.arpa ptr
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61702
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;2.137.196.67.in-addr.arpa.     IN      PTR

;; ANSWER SECTION:
2.137.196.67.in-addr.arpa. 86400 IN     PTR     H2.C137.B196.A67.tor.heavycomputing.ca.

;; AUTHORITY SECTION:
2.137.196.67.in-addr.arpa. 43200 IN     NS      ns1.sizone.org.
2.137.196.67.in-addr.arpa. 43200 IN     NS      ns3.heavycomputing.ca.

;; ADDITIONAL SECTION:
ns1.sizone.org.         86400   IN      A       67.196.137.163
ns3.heavycomputing.ca.  10800   IN      A       209.44.123.227

;; Query time: 294 msec
;; SERVER: 209.44.123.227#53(209.44.123.227)
;; WHEN: Thu Apr  3 15:16:40 2008
;; MSG SIZE  rcvd: 173

[gregp@cerberus] /home/gregp: dig @67.196.137.163 2.137.196.67.in-addr.arpa ptr

; <<>> DiG 9.3.4 <<>> @67.196.137.163 2.137.196.67.in-addr.arpa ptr
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34847
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;2.137.196.67.in-addr.arpa.     IN      PTR

;; ANSWER SECTION:
2.137.196.67.in-addr.arpa. 86400 IN     PTR     H2.C137.B196.A67.tor.heavycomputing.ca.

;; AUTHORITY SECTION:
137.196.67.in-addr.arpa. 86400  IN      NS      ns1.sizone.org.
137.196.67.in-addr.arpa. 86400  IN      NS      ns3.heavycomputing.ca.

;; ADDITIONAL SECTION:
ns1.sizone.org.         86400   IN      A       67.196.137.163
ns3.heavycomputing.ca.  10800   IN      A       209.44.123.227

;; Query time: 39 msec
;; SERVER: 67.196.137.163#53(67.196.137.163)
;; WHEN: Thu Apr  3 15:17:08 2008
;; MSG SIZE  rcvd: 173

[gregp@cerberus] /home/gregp: dig @207.99.0.41 2.137.196.67.in-addr.arpa ptr

; <<>> DiG 9.3.4 <<>> @207.99.0.41 2.137.196.67.in-addr.arpa ptr
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26355
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

;; QUESTION SECTION:
;2.137.196.67.in-addr.arpa.     IN      PTR

;; ANSWER SECTION:
2.137.196.67.in-addr.arpa. 86400 IN     PTR     H2.C137.B196.A67.tor.heavycomputing.ca.

;; AUTHORITY SECTION:
2.137.196.67.in-addr.arpa. 43200 IN     NS      ns3.heavycomputing.ca.
2.137.196.67.in-addr.arpa. 43200 IN     NS      ns1.sizone.org.

;; ADDITIONAL SECTION:
ns3.heavycomputing.ca.  8387    IN      A       209.44.123.227

;; Query time: 49 msec
;; SERVER: 207.99.0.41#53(207.99.0.41)
;; WHEN: Thu Apr  3 15:17:31 2008
;; MSG SIZE  rcvd: 157

[gregp@cerberus] /home/gregp: