Robtex

Up: 77.236.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 77.236.240.0/22
Down right: 77.236.244.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.236.240.8	PTR	8.240.236.77.msk.enforta.com
77.236.240.32	PTR	32.240.236.77.msk.enforta.com
77.236.240.33	PTR	33.240.236.77.msk.enforta.com
77.236.240.40	PTR	40.240.236.77.msk.enforta.com
77.236.240.139	PTR	mx1.gemotest.ru
77.236.240.234	PTR	234.240.236.77.msk.enforta.com
77.236.240.234	A	gpb-ee.ru
77.236.241.8	PTR	8.241.236.77.msk.enforta.com
77.236.241.11	PTR	11.241.236.77.msk.enforta.com
77.236.241.16	PTR	16.241.236.77.msk.enforta.com
77.236.241.40	PTR	40.241.236.77.msk.enforta.com
77.236.241.78	A	post1.citimarket.ru
77.236.241.78	A	post1.citymarket.su
77.236.241.78	A	post1.city-market.ru
77.236.241.248	PTR	248.241.236.77.msk.enforta.com
77.236.242.8	PTR	8.242.236.77.msk.enforta.com
77.236.242.59	PTR	59.242.236.77.msk.enforta.com
77.236.242.178	PTR	mx.pragmatic.ru
77.236.243.64	PTR	64.243.236.77.msk.enforta.com
77.236.243.72	PTR	72.243.236.77.msk.enforta.com
77.236.243.74	PTR	mail2.homa.ru
77.236.243.74	PTR	mail2.maga.ru
77.236.243.74	PTR	mail2.magamax.ru
77.236.243.78	A	mail.russkov-it.ru
77.236.243.100	PTR	100.243.236.77.msk.enforta.com
77.236.243.165	A	2008srv.manasir.name
77.236.244.22	A	hd.jde.ru
77.236.244.194	A	mail.sparmoscow.ru
77.236.246.16	PTR	16.246.236.77.msk.enforta.com
77.236.246.19	PTR	19.246.236.77.msk.enforta.com
77.236.247.3	PTR	3.247.236.77.msk.enforta.com
77.236.247.59	PTR	59.247.236.77.msk.enforta.com
77.236.247.102	A	mail3.textime.ru
77.236.247.102	A	mx4.textime.ru
77.236.247.114	PTR	mail2.byrpex.ru
77.236.247.115	A+PTR	mail2.byrpex.ru
77.236.247.195	PTR	195.247.236.77.msk.enforta.com