Robtex

Up: 87.103.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 87.103.128.0/22
Down right: 87.103.132.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.103.128.0	PTR	0-128-103-87.pppoe.irtel.ru
87.103.128.79	A	ilimlib.ru
87.103.128.115	PTR	115-128-103-87.pppoe.irtel.ru
87.103.128.118	A	mx1.irgkb1.ru
87.103.128.118	A	pochta.irgkb1.ru
87.103.128.129	PTR	dc.baikal.ru
87.103.128.130	PTR	dc.baikal.ru
87.103.128.130	A	idc.ru
87.103.128.130	A	ns.dc.baikal.ru
87.103.128.139	A+PTR	intera.dc.baikal.ru
87.103.128.140	A	dc.baikal.ru
87.103.128.145	A	www.idc.ru
87.103.128.150	PTR	www.idc.ru
87.103.128.150	A	idc.ru
87.103.128.150	A	www1.idc.ru
87.103.128.163	PTR	163-128-103-87.pppoe.irtel.ru
87.103.129.51	PTR	51-129-103-87.pppoe.irtel.ru
87.103.129.83	PTR	83-129-103-87.pppoe.irtel.ru
87.103.129.83	A	baikalirbis.ru
87.103.129.234	PTR	234-129-103-87.pppoe.irtel.ru
87.103.130.130	A	ns.meviralvis.ru
87.103.130.131	PTR	131.130.103.87.dial.irtel.ru
87.103.130.131	A	www.ismu.baikal.ru
87.103.130.131	A	ns.ismu.baikal.ru
87.103.130.133	PTR	133.130.103.87.dial.irtel.ru
87.103.130.134	PTR	mail.ismu.baikal.ru
87.103.130.137	A+PTR	mail.diteco.ru
87.103.130.141	A	mail.conum.com
87.103.130.165	A	mail.irsmu.ru
87.103.131.10	PTR	10.131.103.87.dial.irtel.ru
87.103.131.18	PTR	18.131.103.87.dial.irtel.ru
87.103.131.26	PTR	26.131.103.87.dial.irtel.ru
87.103.131.48	A	mail.alpind.ru
87.103.131.74	A+PTR	mx.irktam.ru
87.103.131.74	A	irktam.ru
87.103.131.81	PTR	81.131.103.87.dial.irtel.ru
87.103.131.107	A+PTR	mail.znamensk.biz
87.103.131.107	A	znamensk.biz
87.103.131.107	A	ns1.znamensk.biz
87.103.131.138	PTR	138.131.103.87.dial.irtel.ru
87.103.131.154	A+PTR	mail.gfu.ru
87.103.131.155	PTR	155.131.103.87.dial.irtel.ru
87.103.131.155	A	gfu.ru
87.103.133.0	PTR	87-103-133-0.pppoe.irtel.ru
87.103.133.32	A+PTR	sb.irmail.ru
87.103.133.44	A	mirsnab.irkutsk.ru
87.103.133.61	A	mail.irkvkx.ru
87.103.133.61	A	mail2.irkvkx.ru
87.103.133.113	PTR	usolie.tv
87.103.133.114	PTR	87-103-133-114.pppoe.irtel.ru
87.103.133.128	A+PTR	mail.sagaangol.ru
87.103.133.128	A	sagaangol.ru
87.103.133.158	A	mail.mzmk.biz
87.103.133.167	A	mx01.bresc.ru
87.103.133.226	PTR	87-103-133-226.pppoe.irtel.ru
87.103.133.226	A	usoliecbs.ru
87.103.133.236	A	www.usolieservis.ru
87.103.133.236	A	usolieservis.ru
87.103.133.247	A	mail.freedom.irkutsk.ru
87.103.133.247	A	freedom.irkutsk.ru
87.103.133.249	PTR	mail.time24.ru
87.103.133.249	A	time24.ru
87.103.134.13	A	tax3805.irkutsk.ru
87.103.134.13	A	mail.tax3805.irkutsk.ru
87.103.134.21	A	xn----7sbxcgea6begfgfn.xn--p1ai
87.103.134.21	A	kursosfera.ru
87.103.134.31	A	aktis.tv
87.103.134.52	A	rd.irkutsk.ru
87.103.134.80	PTR	mail.maskom.ru
87.103.134.121	PTR	87-103-134-121.pppoe.irtel.ru
87.103.134.157	A	mail.irkogc.ru
87.103.134.166	A	xn--80aabgjbzgccfbmvkpcd0cydyil.xn--p1ai
87.103.134.230	A	mail.nuradm.ru
87.103.135.1	PTR	87-103-135-1.pppoe.irtel.ru
87.103.135.14	A	mail2.apteka-alex.ru
87.103.135.43	PTR	87-103-135-43.pppoe.irtel.ru
87.103.135.43	A	mail2.enron-group.ru
87.103.135.91	PTR	mailserver.grindasib.ru
87.103.135.107	PTR	mail.teleos.ru
87.103.135.155	A	www.pribaikal.ru
87.103.135.177	PTR	87-103-135-177.pppoe.irtel.ru
87.103.135.177	A	mail.stroy-consult.ru
87.103.135.195	PTR	mail.kontakt-baikal.ru
87.103.135.240	PTR	mail.angarales.com