Robtex

Up: 78.31.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 78.31.16.0/23
Down right: 78.31.18.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.31.16.3	A	c1941-perovsky.new-tc.ru
78.31.16.4	PTR	ar-trubn.new-tc.ru
78.31.16.5	PTR	kievskayac3550.new-tc.ru
78.31.16.6	PTR	c1941-dokuk.new-tc.ru
78.31.16.8	PTR	ar-voyk.new-tc.ru
78.31.16.9	PTR	ar-turg.new-tc.ru
78.31.16.17	PTR	c881-marshtimos.new-tc.ru
78.31.16.19	PTR	c881-zarayskaya.new-tc.ru
78.31.16.20	PTR	ar-murav.new-tc.ru
78.31.16.21	PTR	ar-hibinskiy.new-tc.ru
78.31.16.150	PTR	mail.sladskaz.ru
78.31.16.150	A	mx.sladskaz.ru
78.31.16.150	A	mail.makgum.ru
78.31.17.22	PTR	mx.unit-org.ru
78.31.17.38	A+PTR	mailo.instplast.ru
78.31.17.38	A	ns1.instplast.ru
78.31.17.146	A	bgaudio.ru
78.31.17.146	A	www.magitel.ru
78.31.17.146	A	www.indoortv.biz
78.31.17.205	PTR	ar-pyat.new-tc.ru
78.31.17.209	PTR	ar-ilmensk.new-tc.ru
78.31.17.210	A	gw.ppi.ru
78.31.17.211	A	ns.ppi.ru
78.31.17.211	A	mail.ppi.ru
78.31.17.214	A	direct.ppi.ru
78.31.17.215	A	pool-n1.ppi.ru
78.31.17.216	A	pool-n2.ppi.ru
78.31.17.217	PTR	ar-kursk.new-tc.ru
78.31.17.217	A	pool-n3.ppi.ru
78.31.17.218	A	pool-n4.ppi.ru
78.31.17.219	A+PTR	pool-n5.ppi.ru
78.31.17.220	A	pool-n6.ppi.ru
78.31.17.221	A	pool-n7.ppi.ru
78.31.17.222	A+PTR	pool-p1.ppi.ru
78.31.17.225	A+PTR	ar-koatek.new-tc.ru
78.31.18.50	PTR	mail.spektrchem.ru
78.31.18.82	A	dealer.grafitec.ru
78.31.18.99	A+PTR	mail.industek.ru
78.31.18.100	A+PTR	mail.zaoegs.ru
78.31.18.108	PTR	mail.vegalon.ru
78.31.18.108	A	m.vegalon.ru
78.31.18.166	A	xn--h1abifpfhc6g.xn--p1ai
78.31.18.211	PTR	mx.unit-org.ru
78.31.18.218	A	volkova-cat3550.new-tc.ru
78.31.18.226	PTR	mail.ruperti.ru
78.31.19.2	A+PTR	eraser.spektronika.ru
78.31.19.2	A	mail.agrospektr.ru
78.31.19.18	PTR	sc.terem.ru
78.31.19.18	PTR	xwcp-35.terem.ru
78.31.19.18	PTR	xwc5632.service.terem.ru
78.31.19.90	PTR	mail2.safary.ru
78.31.19.174	A	paintyard.ru
78.31.19.174	A	www.paintyard.ru
78.31.19.242	PTR	mail.sladskaz.ru
78.31.19.244	PTR	fox.assopt.ru