Robtex

Up: 5.83.160.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 5.83.176.0/21
Down right: 5.83.184.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.83.177.144	PTR	mail.holidayshoppingmail.com
5.83.178.2	PTR	www.reasonry.com
5.83.178.2	A	ns1.reasonry.com
5.83.178.2	A	reasonry.com
5.83.178.3	A+PTR	mx1.reasonry.com
5.83.178.4	A	mx2.reasonry.com
5.83.178.16	A	mx14.reasonry.com
5.83.178.17	PTR	mx17.houseboatgreen.com
5.83.178.17	A	mx15.reasonry.com
5.83.178.18	PTR	mx18.houseboatgreen.com
5.83.178.18	A	mx16.reasonry.com
5.83.178.19	PTR	mx19.houseboatgreen.com
5.83.178.20	A	mx18.reasonry.com
5.83.178.32	A	mx30.reasonry.com
5.83.178.33	A	mx31.reasonry.com
5.83.178.34	A	mx32.reasonry.com
5.83.178.35	A	mx33.reasonry.com
5.83.178.48	A	mx46.reasonry.com
5.83.178.49	A	mx47.reasonry.com
5.83.178.50	A	mx48.reasonry.com
5.83.178.51	A	mx49.reasonry.com
5.83.178.64	A	mx62.reasonry.com
5.83.178.65	PTR	mx65.houseboatblue.com
5.83.178.65	A	mx63.reasonry.com
5.83.178.66	A	mx64.reasonry.com
5.83.178.67	A	mx65.reasonry.com
5.83.178.80	A	mx78.reasonry.com
5.83.178.81	A	mx79.reasonry.com
5.83.178.82	PTR	mx82.houseboatblue.com
5.83.178.82	A	mx80.reasonry.com
5.83.178.83	A	mx81.reasonry.com
5.83.178.96	A	mx10.reasonarch.com
5.83.178.97	PTR	mx97.houseboatblue.com
5.83.178.97	A	mx11.reasonarch.com
5.83.178.98	A	mx12.reasonarch.com
5.83.178.99	A	mx13.reasonarch.com
5.83.178.112	PTR	mx112.houseboatyellow.com
5.83.178.112	A	mx26.reasonarch.com
5.83.178.113	A	mx27.reasonarch.com
5.83.178.114	A	mx28.reasonarch.com
5.83.178.115	A	mx29.reasonarch.com
5.83.178.128	A	mx42.reasonarch.com
5.83.178.129	A	mx43.reasonarch.com
5.83.178.130	A	mx44.reasonarch.com
5.83.178.131	A	mx45.reasonarch.com
5.83.178.144	A+PTR	mx58.reasonarch.com
5.83.178.145	A	mx59.reasonarch.com
5.83.178.146	A	mx60.reasonarch.com
5.83.178.147	A	mx61.reasonarch.com
5.83.178.160	PTR	mx160.houseboatred.com
5.83.178.160	A	mx74.reasonarch.com
5.83.178.161	A	mx75.reasonarch.com
5.83.178.162	A	mx76.reasonarch.com
5.83.178.163	A	mx77.reasonarch.com
5.83.178.176	A	mx6.reasonifer.com
5.83.178.176	A	ace016.aguapoint.com
5.83.178.177	A	ace017.aguapoint.com
5.83.178.177	A	mx7.reasonifer.com
5.83.178.192	A	mx22.reasonifer.com
5.83.178.192	A	ace0122.aguapoint.com
5.83.178.193	A+PTR	mx23.reasonifer.com
5.83.178.193	A	ace0123.aguapoint.com
5.83.178.208	A	ace0138.aguapoint.com
5.83.178.209	A	mx39.reasonifer.com
5.83.178.209	A	ace0139.aguapoint.com
5.83.178.210	A+PTR	ace0140.aguapoint.com
5.83.178.224	A	ace0154.aguapoint.com
5.83.178.225	A	mx55.reasonifer.com
5.83.178.226	A	ace0156.aguapoint.com
5.83.178.227	A	ace0157.aguapoint.com
5.83.178.240	A+PTR	mx70.reasonifer.com
5.83.178.240	A	ace0170.aguapoint.com
5.83.178.241	A	mx71.reasonifer.com
5.83.178.241	A	ace0171.aguapoint.com
5.83.179.2	PTR	www.purposedly.com
5.83.179.2	A	ns1.purposedly.com
5.83.179.3	A+PTR	mx1.purposedly.com
5.83.179.3	A	ns2.purposedly.com
5.83.179.4	A	mx2.purposedly.com
5.83.179.16	A	mx14.purposedly.com
5.83.179.17	A	mx15.purposedly.com
5.83.179.18	A	mx16.purposedly.com
5.83.179.19	A	mx17.purposedly.com
5.83.179.32	A+PTR	mx30.purposedly.com
5.83.179.33	A	mx31.purposedly.com
5.83.179.34	A	mx32.purposedly.com
5.83.179.35	A	mx33.purposedly.com
5.83.179.48	A	mx46.purposedly.com
5.83.179.49	A+PTR	mx47.purposedly.com
5.83.179.50	A+PTR	mx48.purposedly.com
5.83.179.51	A	mx49.purposedly.com
5.83.179.64	A	mx62.purposedly.com
5.83.179.65	A	mx63.purposedly.com
5.83.179.66	A	mx64.purposedly.com
5.83.179.67	A+PTR	mx65.purposedly.com
5.83.179.80	PTR	mx80.duckdivedays.com
5.83.179.80	A	mx78.purposedly.com
5.83.179.81	A+PTR	mx79.purposedly.com
5.83.179.82	A+PTR	mx80.purposedly.com
5.83.179.83	A	mx81.purposedly.com
5.83.179.96	PTR	mx96.duckdivedodge.com
5.83.179.96	A	mx10.purposestant.com
5.83.179.97	PTR	mx97.duckdivedodge.com
5.83.179.97	A	mx11.purposestant.com
5.83.179.98	PTR	mx98.duckdivedodge.com
5.83.179.98	A	mx12.purposestant.com
5.83.179.99	PTR	mx99.duckdivedodge.com
5.83.179.99	A	mx13.purposestant.com
5.83.179.112	PTR	mx112.exceedingalltheexpectations.com
5.83.179.112	A	mx26.purposestant.com
5.83.179.113	PTR	mx113.existforyou.com
5.83.179.113	A	mx27.purposestant.com
5.83.179.114	PTR	mx114.existforyou.com
5.83.179.114	A	mx28.purposestant.com
5.83.179.115	PTR	mx115.existforyou.com
5.83.179.115	A	mx29.purposestant.com
5.83.179.128	A+PTR	mx42.purposestant.com
5.83.179.129	PTR	mx129.existrightnow.com
5.83.179.129	A	mx43.purposestant.com
5.83.179.130	PTR	mx130.existrightnow.com
5.83.179.130	A	mx44.purposestant.com
5.83.179.131	PTR	mx131.existrightnow.com
5.83.179.131	A	mx45.purposestant.com
5.83.179.144	PTR	mx144.exitanytime.com
5.83.179.144	A	mx58.purposestant.com
5.83.179.145	PTR	mx145.exitanytime.com
5.83.179.145	A	mx59.purposestant.com
5.83.179.146	PTR	mx146.exitanytime.com
5.83.179.146	A	mx60.purposestant.com
5.83.179.147	PTR	mx147.exitanytime.com
5.83.179.147	A	mx61.purposestant.com
5.83.179.160	PTR	mx160.exitthroughtheback.com
5.83.179.160	A	mx74.purposestant.com
5.83.179.161	PTR	mx161.exitthroughtheback.com
5.83.179.161	A	mx75.purposestant.com
5.83.179.162	PTR	mx162.glassedblue.com
5.83.179.162	A	mx76.purposestant.com
5.83.179.163	PTR	mx163.glassedblue.com
5.83.179.163	A	mx77.purposestant.com
5.83.179.176	PTR	mx176.goldenharvestmoon.com
5.83.179.176	A	mx6.purposeda.com
5.83.179.177	PTR	mx177.goldenharvestmoon.com
5.83.179.177	A	mx7.purposeda.com
5.83.179.178	PTR	mx178.goldenharvestmoon.com
5.83.179.178	A	mx8.purposeda.com
5.83.179.179	PTR	mx179.goldenharvestmoon.com
5.83.179.179	A	mx9.purposeda.com
5.83.179.192	PTR	mx192.livingontheedgeoflife.com
5.83.179.192	A	mx22.purposeda.com
5.83.179.193	PTR	mx193.livingontheedgeoflife.com
5.83.179.193	A	mx23.purposeda.com
5.83.179.194	PTR	mx194.livingontheedgeoflife.com
5.83.179.194	A	mx24.purposeda.com
5.83.179.195	PTR	mx195.livingontheedgeoflife.com
5.83.179.195	A	mx25.purposeda.com
5.83.179.208	PTR	mx208.pointmatchset.com
5.83.179.208	A	mx38.purposeda.com
5.83.179.209	PTR	mx209.pointmatchset.com
5.83.179.209	A	mx39.purposeda.com
5.83.179.211	PTR	mx211.rosesareredandsoaretomatoes.com
5.83.179.211	A	mx41.purposeda.com
5.83.179.212	A	mx42.purposeda.com
5.83.179.224	A	mx54.purposeda.com
5.83.179.225	PTR	mx225.sugarandspiceisnice.com
5.83.179.225	A	mx55.purposeda.com
5.83.179.226	PTR	mx226.sugarandspiceisnice.com
5.83.179.226	A	mx56.purposeda.com
5.83.179.227	PTR	mx227.sugarandspiceisnice.com
5.83.179.227	A	mx57.purposeda.com
5.83.179.240	PTR	mx240.theybiteback.com
5.83.179.241	PTR	mx241.theybiteback.com
5.83.179.241	A	mx71.purposeda.com
5.83.179.242	PTR	mx242.theybiteback.com
5.83.179.242	A	mx72.purposeda.com
5.83.179.243	PTR	mx243.theybiteback.com
5.83.179.243	A	mx73.purposeda.com
5.83.179.244	A	mx74.purposeda.com
5.83.186.51	PTR	mx51.endogenii.com
5.83.186.55	A	ve1995470747.vs.serverit.de
5.83.187.30	PTR	server30.metrogenii.com
5.83.187.30	A	xn--mnchen-tourismus-jzb.de
5.83.187.30	A	xn--krottenmhl-heb.de
5.83.187.34	PTR	svr34.metrogenii.com
5.83.187.34	A	mail.skypemarketing.de
5.83.187.34	A	www.viralpix.de
5.83.187.163	PTR	media163.metrogenii.com
5.83.188.2	A	markovtrading.net
5.83.189.54	A	yakewo.net
5.83.189.54	A	yakewo.de
5.83.189.56	A	mail.mta-tv.de
5.83.189.59	A	owa.mta-tv.de
5.83.189.82	A	kvm002.byserv.de
5.83.189.90	PTR	mx-gw.as200032.net
5.83.189.92	A	mx.ahmadiyya.de
5.83.189.226	A	over-life.de
5.83.189.250	A	mta-sa.eu
5.83.189.251	A	speedtest.mta-tv.de
5.83.190.2	A+PTR	main.arcticfox.doridian.net
5.83.190.2	A	mail.doridian.com
5.83.190.2	A	mail.zoofaeth.de
5.83.190.17	A	foxcat.unps.us
5.83.190.18	PTR	direct.cyberkitsune.net
5.83.190.18	A	dc-0e59d3d0.cyberkitsune.net
5.83.190.23	A	xiatek.org
5.83.190.206	A	doridian.net
5.83.190.206	A	doridian.com
5.83.190.253	A	arcticfox.doridian.net
5.83.191.72	A	rahnism.com