Robtex

Up: 193.194.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.194.100.0/25
Down right: 193.194.100.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.194.100.3	A	turboconkaluga.ru
193.194.100.5	A+PTR	mx.variantb.ru
193.194.100.5	A	variantb.com
193.194.100.5	A	variantb.ru
193.194.100.10	A	wings1yte.com
193.194.100.208	A+PTR	mx2.kaskadmail.ru
193.194.100.208	A	mail2.kenergo.ru
193.194.100.225	PTR	mx.z-up.ru
193.194.100.225	A	gw2.duma.kaluga.ru
193.194.100.225	A	z-repair.ru
193.194.100.233	A+PTR	mail.bmstu-kaluga.ru
193.194.100.234	A+PTR	bmstu-kaluga.ru
193.194.100.234	A	www.bmstu-kaluga.ru