Robtex

Up: 77.75.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 77.75.4.0/23
Down right: 77.75.6.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.75.4.170	A+PTR	mail.tmnpo.ru
77.75.4.170	A	npotm.ru
77.75.4.170	A	mail.npotm.ru
77.75.4.219	A	mail.estet.ru
77.75.4.220	A+PTR	exchange.estet.ru
77.75.4.221	A	mail.coldnet.ru
77.75.4.221	A	coldnet.ru
77.75.5.18	PTR	tvarm.ru
77.75.5.19	PTR	broadband-5-19.clients.extel.ru
77.75.5.86	PTR	broadband-5-86.clients.extel.ru
77.75.5.86	A	kapstrec.ru
77.75.5.101	A+PTR	mail.ator.ru
77.75.5.101	A	mail2.adwise.ru
77.75.5.101	A	mail2.m5media.ru
77.75.5.104	PTR	broadband-5-104.clients.extel.ru
77.75.5.104	A	*.ator.ru
77.75.5.104	A	www.ator.ru
77.75.5.106	PTR	broadband-5-106.clients.extel.ru
77.75.5.106	A	billboart.ru
77.75.5.122	A+PTR	warehouse.lex-s.ru
77.75.5.125	PTR	broadband-5-125.clients.extel.ru
77.75.5.171	PTR	broadband-5-171.clients.extel.ru
77.75.5.238	PTR	broadband-5-238.clients.extel.ru