Robtex

Up: 89.111.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 89.111.72.0/23
Down right: 89.111.74.0/23

IP	Type	Hostname
89.111.72.21	A	media.cez.cz
89.111.72.22	PTR	media2.cez.cz
89.111.72.82	A	smsengine.cez.cz
89.111.72.145	A	servicedesk.cez.cz
89.111.72.163	A	katalogict.cez.cz
89.111.72.164	A	pozetest.cez.cz
89.111.72.165	A	poze.cez.cz
89.111.72.178	A	vok.cez.cz
89.111.72.178	A	cezonline.cez.cz
89.111.72.179	A	citrix.cez.cz
89.111.72.185	A+PTR	verify.cez.cz
89.111.72.187	A	rotest.cez.cz
89.111.72.188	A+PTR	ok-ep.cez.cz
89.111.73.9	A+PTR	hermes10.cez.cz
89.111.73.10	A	hermes11.cez.cz
89.111.73.13	A+PTR	emailengine2.cez.eu
89.111.73.135	A	charon10.cez.cz
89.111.73.164	A+PTR	smtp21.cez.cz
89.111.73.165	A+PTR	smtp22.cez.cz
89.111.73.200	A+PTR	ns10.cez.cz