Robtex

Up: 77.75.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 77.75.0.0/21
Down right: 77.75.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.75.0.3	PTR	broadband-0-3.clients.extel.ru
77.75.0.12	A	web02-tip.lon.uk.voicedot.net
77.75.0.22	A	web02-tip.lon.uk.voicedot.net
77.75.0.64	PTR	broadband-0-64.clients.extel.ru
77.75.0.67	PTR	broadband-0-67.clients.extel.ru
77.75.0.135	A	gateway.tescointernetphone.com
77.75.0.195	PTR	broadband-0-195.clients.extel.ru
77.75.0.205	A	mail.nppmera.ru
77.75.0.242	PTR	broadband-0-242.clients.extel.ru
77.75.1.33	PTR	broadband-1-33.clients.extel.ru
77.75.1.98	PTR	broadband-1-98.clients.extel.ru
77.75.1.144	PTR	broadband-1-144.clients.extel.ru
77.75.1.147	PTR	broadband-1-147.clients.extel.ru
77.75.1.160	PTR	broadband-1-160.clients.extel.ru
77.75.1.162	PTR	broadband-1-162.clients.extel.ru
77.75.1.178	A+PTR	mail.dlgrusland.ru
77.75.1.190	A	mx2.mini-avtoport.ru
77.75.1.210	PTR	broadband-1-210.clients.extel.ru
77.75.1.227	PTR	broadband-1-227.clients.extel.ru
77.75.1.234	A	sks-mo.ru
77.75.1.234	A	mail.sks-mo.ru
77.75.2.122	A	ex.remtehmash.ru
77.75.2.166	PTR	broadband-2-166.clients.extel.ru
77.75.2.170	A	mail.mpmpapers.ru
77.75.2.218	PTR	mail.crystalteam.ru
77.75.3.34	A	mail.rigaland-hotel.ru
77.75.3.67	PTR	broadband-3-67.clients.extel.ru
77.75.3.114	A	fanfan.pro
77.75.3.114	A	mail1.fanfan.pro
77.75.3.174	A	ns2.sitnet.ru
77.75.3.195	A+PTR	gren.prioris.ru
77.75.3.204	PTR	broadband-3-204.clients.extel.ru
77.75.3.235	PTR	broadband-3-235.clients.extel.ru
77.75.3.235	A	mx1.upkvartal.ru
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	A	kapstrec.ru
77.75.5.101	A	mail2.adwise.ru
77.75.5.101	A	mail2.m5media.ru
77.75.5.101	A	mail.ator.ru
77.75.5.122	A	warehouse.lex-s.ru
77.75.8.12	A	pppoe-77-75-8-12.ppp.kmv.ru
77.75.8.35	PTR	pppoe-77-75-8-35.ppp.kmv.ru
77.75.8.153	A	pppoe-77-75-8-153.ppp.kmv.ru
77.75.8.176	PTR	pppoe-77-75-8-176.ppp.kmv.ru
77.75.8.193	PTR	pppoe-77-75-8-193.ppp.kmv.ru
77.75.8.231	A	pppoe-77-75-8-231.ppp.kmv.ru
77.75.8.252	A	pppoe-77-75-8-252.ppp.kmv.ru
77.75.9.13	A	pppoe-77-75-9-13.ppp.kmv.ru
77.75.9.16	A+PTR	pppoe-77-75-9-16.ppp.kmv.ru
77.75.9.138	A	pppoe-77-75-9-138.ppp.kmv.ru
77.75.9.178	PTR	pppoe-77-75-9-178.ppp.kmv.ru
77.75.9.210	A+PTR	pppoe-77-75-9-210.ppp.kmv.ru
77.75.9.222	A	pppoe-77-75-9-222.ppp.kmv.ru
77.75.9.226	PTR	pppoe-77-75-9-226.ppp.kmv.ru
77.75.9.234	A	pppoe-77-75-9-234.ppp.kmv.ru
77.75.9.243	A+PTR	pppoe-77-75-9-243.ppp.kmv.ru
77.75.10.1	PTR	pppoe-77-75-10-1.ppp.kmv.ru
77.75.10.7	A	pppoe-77-75-10-7.ppp.kmv.ru
77.75.10.50	PTR	pppoe-77-75-10-50.ppp.kmv.ru
77.75.10.84	A	pppoe-77-75-10-84.ppp.kmv.ru
77.75.10.110	A	pppoe-77-75-10-110.ppp.kmv.ru
77.75.10.156	A	pppoe-77-75-10-156.ppp.kmv.ru
77.75.10.168	A	pppoe-77-75-10-168.ppp.kmv.ru
77.75.10.191	A	pppoe-77-75-10-191.ppp.kmv.ru
77.75.10.233	A	pppoe-77-75-10-233.ppp.kmv.ru
77.75.11.21	A	pppoe-77-75-11-21.ppp.kmv.ru
77.75.11.36	A	pppoe-77-75-11-36.ppp.kmv.ru
77.75.11.109	A	pppoe-77-75-11-109.ppp.kmv.ru
77.75.11.129	A+PTR	pppoe-77-75-11-129.ppp.kmv.ru
77.75.11.138	A	pppoe-77-75-11-138.ppp.kmv.ru
77.75.11.228	A	pppoe-77-75-11-228.ppp.kmv.ru
77.75.12.16	A+PTR	pppoe-77-75-12-16.ppp.kmv.ru
77.75.12.173	A	pppoe-77-75-12-173.ppp.kmv.ru
77.75.12.179	A	pppoe-77-75-12-179.ppp.kmv.ru
77.75.12.208	A+PTR	pppoe-77-75-12-208.ppp.kmv.ru
77.75.12.252	A	pppoe-77-75-12-252.ppp.kmv.ru
77.75.13.10	A	pppoe-77-75-13-10.ppp.kmv.ru
77.75.13.16	PTR	pppoe-77-75-13-16.ppp.kmv.ru
77.75.13.31	A	pppoe-77-75-13-31.ppp.kmv.ru
77.75.13.55	A	pppoe-77-75-13-55.ppp.kmv.ru
77.75.13.82	PTR	pppoe-77-75-13-82.ppp.kmv.ru
77.75.13.96	A+PTR	pppoe-77-75-13-96.ppp.kmv.ru
77.75.13.100	A	pppoe-77-75-13-100.ppp.kmv.ru
77.75.13.163	A+PTR	pppoe-77-75-13-163.ppp.kmv.ru
77.75.13.218	A	pppoe-77-75-13-218.ppp.kmv.ru
77.75.13.229	A	pppoe-77-75-13-229.ppp.kmv.ru
77.75.14.20	A	pppoe-77-75-14-20.ppp.kmv.ru
77.75.14.38	A	pppoe-77-75-14-38.ppp.kmv.ru
77.75.14.42	A	pppoe-77-75-14-42.ppp.kmv.ru
77.75.14.81	A+PTR	pppoe-77-75-14-81.ppp.kmv.ru
77.75.14.84	A	pppoe-77-75-14-84.ppp.kmv.ru
77.75.14.104	A	pppoe-77-75-14-104.ppp.kmv.ru
77.75.14.129	A+PTR	pppoe-77-75-14-129.ppp.kmv.ru
77.75.14.131	A	pppoe-77-75-14-131.ppp.kmv.ru
77.75.14.170	A	pppoe-77-75-14-170.ppp.kmv.ru
77.75.14.195	PTR	pppoe-77-75-14-195.ppp.kmv.ru
77.75.14.237	A	pppoe-77-75-14-237.ppp.kmv.ru
77.75.15.8	A	pppoe-77-75-15-8.ppp.kmv.ru
77.75.15.29	A	pppoe-77-75-15-29.ppp.kmv.ru
77.75.15.97	A+PTR	pppoe-77-75-15-97.ppp.kmv.ru
77.75.15.110	A	pppoe-77-75-15-110.ppp.kmv.ru
77.75.15.146	PTR	pppoe-77-75-15-146.ppp.kmv.ru
77.75.15.162	PTR	pppoe-77-75-15-162.ppp.kmv.ru
77.75.15.204	A	pppoe-77-75-15-204.ppp.kmv.ru
77.75.15.221	A	pppoe-77-75-15-221.ppp.kmv.ru
77.75.15.235	A	pppoe-77-75-15-235.ppp.kmv.ru
77.75.15.245	A	pppoe-77-75-15-245.ppp.kmv.ru