Robtex

Up: 145.255.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 145.255.232.0/22
Down right: 145.255.236.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
145.255.232.0	PTR	145-255-232-0.obit.ru
145.255.232.3	PTR	145-255-232-3.obit.ru
145.255.232.4	PTR	145-255-232-4.obit.ru
145.255.232.7	PTR	145-255-232-7.obit.ru
145.255.232.8	PTR	145-255-232-8.obit.ru
145.255.232.10	A+PTR	mail.antat.ru
145.255.232.10	A	antat.ru
145.255.232.10	A	anrt.antat.ru
145.255.232.90	A	baumx1.bautrust.ru
145.255.232.94	A+PTR	mail.huzur.ru
145.255.232.94	A	sound.radioazan.ru
145.255.232.166	A	mail.huzur.ru
145.255.232.166	A	mail.dumrt.ru
145.255.232.166	A	mail.halalgid.com
145.255.232.202	PTR	mx1.alliance-ar.ru
145.255.232.202	A	mx.angar-rf.ru
145.255.232.202	A	mx.alliance-ar.ru
145.255.233.42	A+PTR	mx.sdushor3spb.ru
145.255.233.42	A	mx0.sport-school3.ru
145.255.233.42	A	mx2.sdushor3spb.ru
145.255.233.43	PTR	145-255-233-43.obit.ru
145.255.233.43	A	biathlonspb.ru
145.255.233.44	A	biathlonspb.ru
145.255.233.50	PTR	mx2.lidgroup.ru
145.255.233.51	PTR	gw.lidgroup.ru.233.255.145.in-addr.arpa
145.255.233.52	PTR	145-255-233-52.obit.ru
145.255.233.53	PTR	145-255-233-53.obit.ru
145.255.233.162	A	ibank2.stroycombank.com
145.255.233.204	A+PTR	mail.lenoblgas.ru
145.255.233.226	A+PTR	smail.appetitus.spb.ru
145.255.234.6	A	avtokartel.ru
145.255.234.6	A	avtocartel.ru
145.255.234.11	A	mail1.ftkrostr.ru
145.255.234.60	A	slavyanka.izora.info
145.255.234.169	PTR	145-255-234-169.obit.ru
145.255.234.227	PTR	145-255-234-227.obit.ru
145.255.234.227	A	volvokpp.ru
145.255.234.228	A	ns.zakazhi24.ru
145.255.234.228	A	ns.zakazi24.biz
145.255.234.228	A	ns.zakazi24.org
145.255.235.26	A+PTR	post.lmgp.ru
145.255.235.110	A	mail.zaogsp.ru
145.255.235.122	PTR	mx2.sm-24.ru
145.255.235.122	PTR	mail.szsignal.ru
145.255.235.170	PTR	mail.cntiprogress.com
145.255.235.171	A+PTR	mail.robocab.ru
145.255.235.171	A	robocab.ru
145.255.235.171	A	www.uss-spb.ru
145.255.235.180	A	mail.pharmholding.com
145.255.235.235	PTR	145-255-235-235.obit.ru
145.255.236.7	A+PTR	mx1.bigbox.ru
145.255.236.22	A	mailserv.sfera-it.com
145.255.236.58	A	mail.c-i-p.ru
145.255.237.42	PTR	145-255-237-42.obit.ru
145.255.237.42	A	mail.itctg.ru
145.255.237.162	PTR	145-255-237-162.obit.ru
145.255.237.162	A	pro-mine.net
145.255.237.181	A	gisca.ru
145.255.238.12	PTR	145-255-238-12.obit.ru
145.255.238.106	A+PTR	mx.interteks.ru
145.255.238.106	A	dterm.volokno.ru
145.255.238.114	A+PTR	mail.miacom.ru
145.255.238.114	A	pop.miacom.ru
145.255.238.114	A	mx2.miacom.ru
145.255.238.122	A	smetr.ru
145.255.238.131	A+PTR	mx1.t-systems.ru
145.255.238.131	A	spbsrv-exmail.t-systems.ru
145.255.238.131	A	ns.t-systems.ru
145.255.238.132	PTR	145-255-238-132.obit.ru
145.255.238.180	PTR	145-255-238-180.obit.ru
145.255.238.180	A	www.x-tina.ru
145.255.238.180	A	inomarka-zapchasti.ru
145.255.238.195	PTR	mail.tgc1-service.ru
145.255.238.195	PTR	mail.tgcs.ru
145.255.238.211	PTR	soft-werke.com
145.255.238.211	A	mailserver.soft-werke.com
145.255.238.211	A	soft-werke.ru
145.255.239.10	A	mail.baltleasing.ru
145.255.239.12	A	mail2.baltleasing.ru
145.255.239.13	A	mail.b-leasing.ru
145.255.239.16	PTR	145-255-239-16.obit.ru
145.255.239.94	A	spb.honey-granules.com
145.255.239.94	A	spb.medovdom.ru
145.255.239.94	A	medovdom.ru
145.255.239.126	A	email.brandservice.pro
145.255.239.150	A	ns1.skrazvitie.ru
145.255.239.150	A	skrazvitie.ru
145.255.239.150	A	mail.skrazvitie.ru
145.255.239.162	A+PTR	mail.oasp-sz.ru
145.255.239.174	A	mail.sev-rus.ru
145.255.239.178	PTR	145-255-239-178.obit.ru