Robtex

Up: 198.136.56.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 198.136.57.0/25
Down right: 198.136.57.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.136.57.2	PTR	la02.mithrilnetwork.com
198.136.57.2	A	ns4.anurva.com
198.136.57.2	A	ns4.s2.studiobinary.com
198.136.57.3	PTR	198-136-57-3.static.hostdime.com
198.136.57.3	A	com-net.site
198.136.57.3	A	iggystudio.com
198.136.57.8	PTR	198-136-57-8.static.dimenoc.com
198.136.57.8	A	thelittlebigblog.com
198.136.57.8	A	thebetterhalfblogs.com
198.136.57.9	PTR	b-important.com
198.136.57.9	A	dutchnetwork.ca
198.136.57.9	A	mail.b-important.com
198.136.57.10	A	virtuusa.com
198.136.57.11	A	beautythink.com
198.136.57.11	A	eattonight.com
198.136.57.12	PTR	mail.straightistheway.net
198.136.57.12	A	acgphotography.com
198.136.57.12	A	embracelife.info
198.136.57.13	PTR	198-136-57-13.static.dimenoc.com
198.136.57.13	A	arendeverts.com
198.136.57.13	A	amacata.com
198.136.57.14	A	laceembrace.com
198.136.57.14	A	scoutboutique.com
198.136.57.15	PTR	198-136-57-15.static.hostdime.com
198.136.57.15	A	500up.com
198.136.57.18	A	gatesenglish.com
198.136.57.19	PTR	mail.ultrashieldaerosols.net
198.136.57.19	A	trouden.com
198.136.57.20	A	www.richemailmarketing.com
198.136.57.20	A	richemailmarketing.com
198.136.57.21	PTR	198-136-57-21.static.hostdime.com
198.136.57.25	PTR	198-136-57-25.static.dimenoc.com
198.136.57.29	A	ukwatersideproperty.com
198.136.57.29	A	crrealtydrseda.com
198.136.57.29	A	orangecountyhometutors.com
198.136.57.38	PTR	mail.myinsured.net
198.136.57.57	PTR	grab-jab.com
198.136.57.74	PTR	198-136-57-74.static.lvnoc.com
198.136.57.76	A	node-lax.iohost.com
198.136.57.82	A+PTR	host603.paragonhost.net
198.136.57.82	A	mypromail.com
198.136.57.82	A	mail.carlosyrigoyen.com
198.136.57.95	A	defensedoors.com
198.136.57.97	PTR	198-136-57-97.static.lvnoc.com
198.136.57.97	A	2fast2fourier.com
198.136.57.97	A	fastfourier.net
198.136.57.104	PTR	ns2.feel-safe.net
198.136.57.120	PTR	198-136-57-120.static.lvnoc.com
198.136.57.120	A	mx.air-review.com
198.136.57.121	PTR	ariana.4195tech.com
198.136.57.121	A	admin.4195tech.com
198.136.57.121	A	*.zobmo.com
198.136.57.122	PTR	198-136-57-122.static.lvnoc.com
198.136.57.123	PTR	198-136-57-123.static.lvnoc.com
198.136.57.123	A	sobamushi.com
198.136.57.123	A	thepaleovore.com
198.136.57.125	PTR	198-136-57-125.static.lvnoc.com
198.136.57.125	A	candelasalsaclub.com
198.136.57.125	A	cscpcc.org
198.136.57.126	PTR	ipmi
198.136.57.131	PTR
198.136.57.131	A	justnile.com.sg
198.136.57.131	A	yventures.com.sg
198.136.57.132	PTR	198.136.57.132
198.136.57.132	A	ns2.yventures.com.sg
198.136.57.134	PTR	198-136-57-134.static.dimenoc.com
198.136.57.135	PTR	198-136-57-135.static.dimenoc.com
198.136.57.135	A	slimtrader.net
198.136.57.135	A	yourpowertochangeeverything.net
198.136.57.136	PTR	198-136-57-136.static.dimenoc.com
198.136.57.138	A	kashyna.de
198.136.57.138	A	yikjin.com
198.136.57.138	A	yventuresinc.com
198.136.57.139	A	mail.justevan.com
198.136.57.142	PTR	198-136-57-142.static.dimenoc.com
198.136.57.143	A	main.jmendeth.com
198.136.57.146	PTR	198-136-57-146.static.dimenoc.com
198.136.57.146	A	dt2.unitfour.com.br
198.136.57.146	A	mitratoyotaka.co.id
198.136.57.160	PTR	hkioh.com
198.136.57.164	A	lb.la.rootleveltech.com
198.136.57.165	PTR	198-136-57-165.static.dimenoc.com
198.136.57.165	A	track.distinctivedemographix.com
198.136.57.165	A	doitformenow.com
198.136.57.166	PTR	198-136-57-166.static.dimenoc.com
198.136.57.175	PTR	s1.andreskrahe.com
198.136.57.175	A	s1.dominiospe.com
198.136.57.182	PTR	198-136-57-182.static.dimenoc.com
198.136.57.182	A	josepena.com
198.136.57.186	PTR	www8.maknet.com
198.136.57.186	A	masslostpet.net
198.136.57.186	A	dns1.maknet.com
198.136.57.187	PTR	198-136-57-187.static.dimenoc.com
198.136.57.187	A	dns2.maknet.com
198.136.57.187	A	sagax.com
198.136.57.188	PTR	198-136-57-188.static.dimenoc.com
198.136.57.188	A	joeferry.com
198.136.57.189	PTR	198-136-57-189.static.dimenoc.com
198.136.57.198	A+PTR	nap19-web.la.rootleveltech.com
198.136.57.199	PTR	s1.ralmagroup.com
198.136.57.199	A	s5.dominiospe.com
198.136.57.228	PTR	198-136-57-228.static.dimenoc.com
198.136.57.255	PTR	198-136-57-255.static.dimenoc.com