Robtex

Up: 87.117.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 87.117.40.0/22
Down right: 87.117.44.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.117.40.27	PTR	27.40.117.87.donpac.ru
87.117.40.30	A	it-workshop.ru
87.117.40.30	A	mail.it-workshop.ru
87.117.40.32	PTR	32.40.117.87.static.donpac.ru
87.117.40.32	A	gw.ugmet.ru
87.117.40.117	A	firma-rider.ru
87.117.40.155	PTR	azov.electro-si.ru
87.117.40.155	A	mail-server.electro-si.ru
87.117.40.155	A	mail.greenmaks.ru
87.117.41.0	PTR	0.41.117.87.donpac.ru
87.117.41.8	PTR	8.41.117.87.donpac.ru
87.117.41.16	PTR	16.41.117.87.donpac.ru
87.117.41.24	PTR	24.41.117.87.donpac.ru
87.117.41.32	PTR	32.41.117.87.donpac.ru
87.117.41.104	PTR	104.41.117.87.donpac.ru
87.117.41.170	PTR	170.41.117.87.donpac.ru
87.117.42.71	A	71.42.117.87.donpac.ru
87.117.42.211	PTR	211.42.117.87.donpac.ru
87.117.43.24	PTR	24.43.117.87.donpac.ru
87.117.43.104	PTR	104.43.117.87.donpac.ru
87.117.43.112	A+PTR	112.43.117.87.donpac.ru
87.117.43.208	PTR	208.43.117.87.donpac.ru
87.117.43.224	A+PTR	224.43.117.87.donpac.ru
87.117.44.11	PTR	cof-gukovo.ru
87.117.44.11	A	mail2.cof-gukovo.ru
87.117.44.14	A	www.cof-gukovo.ru
87.117.44.14	A	ns0.cof-gukovo.ru
87.117.44.14	A	ns.cof-gukovo.ru
87.117.44.18	PTR	18.44.117.87.donpac.ru
87.117.44.26	PTR	zeta.simpreza.ru
87.117.44.26	A	srv18.gruppamaxi.ru
87.117.44.26	A	syd.su
87.117.44.176	PTR	176.44.117.87.donpac.ru
87.117.44.184	PTR	184.44.117.87.donpac.ru
87.117.44.248	PTR	248.44.117.87.donpac.ru
87.117.45.1	PTR	1.45.117.87.donpac.ru
87.117.45.12	A	oblstat.rostel.ru
87.117.45.24	A+PTR	24.45.117.87.donpac.ru
87.117.45.48	PTR	48.45.117.87.donpac.ru
87.117.45.74	PTR	74.45.117.87.donpac.ru
87.117.45.130	PTR	com.as61.ru
87.117.45.131	PTR	131.45.117.87.donpac.ru
87.117.45.170	PTR	170.45.117.87.donpac.ru
87.117.45.170	A	ocdod.ru
87.117.45.170	A	ns.stupeni-uspeha.ru
87.117.45.185	PTR	185.45.117.87.donpac.ru
87.117.45.186	PTR	186.45.117.87.donpac.ru
87.117.45.187	PTR	187.45.117.87.donpac.ru
87.117.45.194	PTR	194.45.117.87.donpac.ru
87.117.45.200	PTR	200.45.117.87.donpac.ru
87.117.45.226	PTR	226.45.117.87.donpac.ru
87.117.45.226	A	mail.ums-h.com
87.117.45.226	A	mail.stroibaza61.ru
87.117.45.242	A+PTR	ucmoku.ru
87.117.46.23	A	local.kagalnitskiy.mfc61.ru
87.117.46.82	PTR	82.46.117.87.donpac.ru
87.117.46.186	PTR	mail.oilrusi.ru
87.117.46.186	A	mail.oil-nnpz.ru
87.117.46.186	A	mail.oil-nznp.ru
87.117.47.2	PTR	2.47.117.87.donpac.ru
87.117.47.37	A	mfcazov.ru
87.117.47.37	A	www.mfcazov.ru
87.117.47.50	PTR	50.47.117.87.donpac.ru
87.117.47.171	A	mfc-krsulin.ru
87.117.47.179	A+PTR	celina-mfc61.ru