Robtex

Up: 84.42.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 84.42.48.0/22
Down right: 84.42.52.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
84.42.48.10	A+PTR	ns.debryansk.ru
84.42.48.18	A+PTR	as3845m.tts.debryansk.ru
84.42.48.54	PTR	as5350c.tts.debryansk.ru
84.42.48.98	A+PTR	smtp.debryansk.ru
84.42.48.110	A	mx.noc.brsi.ru
84.42.49.66	A+PTR	mx.hq.b-edu.ru
84.42.49.66	A	ns1.b-edu.ru
84.42.49.66	A	mx1.edu.debryansk.ru
84.42.49.86	A+PTR	mx.bryanskobl.ru
84.42.49.86	A	bryanskobl.ru
84.42.49.86	A	mx.admin.debryansk.ru
84.42.49.90	A+PTR	mx.sch.b-edu.ru
84.42.49.90	A	sch.b-edu.ru
84.42.49.90	A	*.sch.b-edu.ru
84.42.49.102	A+PTR	mx.hq.brsi.ru
84.42.49.102	A+PTR	mx.hq.br.center.rt.ru
84.42.49.126	A	edu32.ru
84.42.49.126	A	hq.b-edu.ru
84.42.49.126	A	mx.eduinfo32.ru
84.42.50.30	A+PTR	mx.debryansk.ru
84.42.50.30	A+PTR	ns2.debryansk.ru
84.42.50.30	A	mamadolce.ru
84.42.50.118	A+PTR	mx.lucky.debryansk.ru
84.42.50.118	A	lucky.debryansk.ru
84.42.50.123	A	www.bgsha.com
84.42.50.138	A	dcrystal.debryansk.ru
84.42.50.182	A	santehlit.debryansk.ru
84.42.50.230	A+PTR	moon.r-style.ru
84.42.51.46	A+PTR	mx1.bfarm.ru
84.42.51.50	A+PTR	mx.bizon-m.debryansk.ru
84.42.51.137	A	xn--32-7lc6ak.xn--p1ai
84.42.51.148	A	xn--90asehmeeq.xn--p1ai
84.42.51.245	A+PTR	mx.cit.br.center.rt.ru
84.42.51.245	A	ns1.br.center.rt.ru
84.42.52.17	A	tehprom.debryansk.ru
84.42.52.18	A+PTR	mx.tehmet.debryansk.ru
84.42.52.18	A	tehmet.debryansk.ru
84.42.52.34	A+PTR	mx.gnk.debryansk.ru
84.42.52.34	A	gnk.debryansk.ru
84.42.52.56	A+PTR	gorvodokanal.debryansk.ru
84.42.52.56	A	mx.gorvodokanal.debryansk.ru
84.42.52.60	A	slstyle.debryansk.ru
84.42.52.63	A	gorgaz.debryansk.ru
84.42.52.64	A	vz111.debryansk.ru
84.42.52.70	A	mx.minimed.debryansk.ru
84.42.52.83	A	weather.debryansk.ru
84.42.52.96	A	limesoftware.debryansk.ru
84.42.52.107	A	rosbank36.debryansk.ru
84.42.52.111	A	eeh.debryansk.ru
84.42.52.163	A	justice.debryansk.ru
84.42.52.173	A+PTR	rosbank.debryansk.ru
84.42.52.173	A	mx.rosbank.debryansk.ru
84.42.52.188	PTR	itadvisor.ru
84.42.52.254	A+PTR	mx.otchet.debryansk.ru
84.42.52.254	A	otchet.debryansk.ru
84.42.53.3	PTR	mx.iso.debryansk.ru
84.42.53.3	A	iso.debryansk.ru
84.42.53.5	PTR	mx.vodka.debryansk.ru
84.42.53.65	A+PTR	mx.bmpk.debryansk.ru
84.42.53.65	A	bmpk.debryansk.ru
84.42.53.113	PTR	mail.tsar-mebel.ru
84.42.53.115	PTR	reg32.roszdravnadzor.ru
84.42.53.175	A	sem.debryansk.ru
84.42.53.175	A	mx.sem.debryansk.ru
84.42.55.38	A+PTR	mail.bkenergo.ru
84.42.55.38	A	elektro-32.ru
84.42.55.38	A	ns2.elektro-32.ru
84.42.55.70	PTR	mail.bryansk.itb.ru
84.42.55.100	A	exchange56.agrohold.ru
84.42.55.118	A	terminal58.agrohold.ru
84.42.55.202	A+PTR	mail.is32.ru
84.42.55.202	A	is32.ru
84.42.55.202	A	ns.is32.ru
84.42.55.226	A	elektro-32.ru
84.42.55.226	A	ns.elektro-32.ru
84.42.55.228	A	www.elektro-32.ru
84.42.55.230	A+PTR	mx.elektro-32.ru
84.42.55.234	A	isp.elektro-32.ru
84.42.55.236	A	mx.elektro-32.ru