Robtex

Up: 126.238.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 126.238.128.0/18
Down right: 126.238.192.0/18

IP	Type	Hostname
126.238.193.3	A+PTR	ai126238193003.19.access-internet.ne.jp
126.238.193.16	A	ai126238193016.19.access-internet.ne.jp
126.238.193.18	A	ai126238193018.19.access-internet.ne.jp
126.238.193.21	A	ai126238193021.19.access-internet.ne.jp
126.238.193.140	A	ai126238193140.19.access-internet.ne.jp
126.238.193.145	A	ai126238193145.19.access-internet.ne.jp
126.238.193.146	A	ai126238193146.19.access-internet.ne.jp
126.238.193.147	A	ai126238193147.19.access-internet.ne.jp