Robtex

Up: 78.153.134.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 78.153.135.0/25
Down right: 78.153.135.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.153.135.1	PTR	mgw-135.ultimanet.ru
78.153.135.195	PTR	eonl.ultimanet.ru
78.153.135.197	PTR	solinus.ultimanet.ru
78.153.135.197	A	c6.ultimanet.ru
78.153.135.197	A	web.ultimanet.ru
78.153.135.205	PTR	135-205.ultimanet.ru
78.153.135.207	PTR	135-207.ultimanet.ru
78.153.135.221	PTR	web.ultimanet.ru
78.153.135.221	A	ns2.ultimanet.ru
78.153.135.222	PTR	mail.ultimanet.ru
78.153.135.222	A	mail.solinus.ru
78.153.135.250	PTR	mgw-ext.ultimanet.ru
78.153.135.250	A	mgw.ultimanet.ru
78.153.135.250	A	ultimanet.ru
78.153.135.253	A	ns.ultimanet.ru