Robtex

Up: 133.56.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 133.57.0.0/17
Down right: 133.57.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
133.57.10.2	PTR	pc002.seg10.nipr.ac.jp
133.57.14.49	A+PTR	pc049.seg14.nipr.ac.jp
133.57.14.49	A	pc49.seg14.nipr.ac.jp
133.57.15.64	A+PTR	pc64.seg15.nipr.ac.jp
133.57.20.20	A+PTR	pc020.seg20.nipr.ac.jp
133.57.20.20	A+PTR	isch1.nipr.ac.jp
133.57.20.20	A	pavo.nipr.ac.jp
133.57.20.21	PTR	pc021.seg20.nipr.ac.jp
133.57.20.33	A	polaris.nipr.ac.jp
133.57.32.2	A	pc002.seg32.nipr.ac.jp
133.57.42.47	A+PTR	pc047.seg42.nipr.ac.jp
133.57.42.47	A	pc47.seg42.nipr.ac.jp
133.57.42.123	A+PTR	pc123.seg42.nipr.ac.jp
133.57.43.39	A+PTR	pc039.seg43.nipr.ac.jp
133.57.64.79	A+PTR	pc079.seg64.nipr.ac.jp
133.57.64.79	A	crux.nipr.ac.jp
133.57.64.80	A	polaris.nipr.ac.jp