(詳細略)
$ dig o9.o9sama.com

;; ANSWER SECTION:
o9.o9sama.com. 79515 IN A 59.158.181.34

$ dig -x 59.158.181.34

;; ANSWER SECTION:
34.181.158.59.in-addr.arpa. 2204 IN PTR 59x158x181x34.ap59.ftth.ucom.ne.jp.

UCOM(USEN)を使っている模様

更に
blazeblow.netのリンク先にgokinj.com

$ dig www.gokinj.com

;; ANSWER SECTION:
www.gokinj.com. 85647 IN CNAME sv1.gokinj.com.
sv1.gokinj.com. 85647 IN A 60.32.169.82

$ dig -x 60.32.169

;; AUTHORITY SECTION:
169.32.60.in-addr.arpa. 10800 IN SOA pns.ocn.ad.jp. postmaster.ocn.ad.jp. 82 10800 3600 604800 86400

OCNも使ってるみたい。

flameblow.net→heart.heart-cc.net

$ dig heart.heart-cc.net

;; ANSWER SECTION:
heart.heart-cc.net. 86400 IN A 202.216.238.140

$ dig -x 202.216.238.140

;; ANSWER SECTION:
140.238.216.202.in-addr.arpa. 86400 IN PTR p202-216-238-140.sub.ne.jp.

;; AUTHORITY SECTION:
238.216.202.in-addr.arpa. 86400 IN NS ns.dti.ad.jp.
238.216.202.in-addr.arpa. 86400 IN NS ns2.dti.ad.jp.

DTIも使ってんのか?