Robtex

Up: 83.230.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 83.230.0.0/20
Down right: 83.230.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.230.0.0	PTR	83.230.0.0.zubrzyk.pirx.pl
83.230.0.10	A	peopleoflava.pl
83.230.0.80	A	voldy.net
83.230.0.80	A	83.230.0.80.zubrzyk.pirx.pl
83.230.0.181	A	83.230.0.181.zubrzyk.pirx.pl
83.230.0.181	A	paszczak.one.pl
83.230.1.4	A+PTR	83.230.1.4.zubrzyk.pirx.pl
83.230.1.32	PTR	83.230.1.32.zubrzyk.pirx.pl
83.230.1.37	A	83.230.1.37.zubrzyk.pirx.pl
83.230.1.49	A	83.230.1.49.zubrzyk.pirx.pl
83.230.1.228	A	wiblog.pl
83.230.1.228	A	indeka.com.pl
83.230.2.84	A	83.230.2.84.gl.digi.pl
83.230.2.182	A	83.230.2.182.gl.digi.pl
83.230.4.9	A	kosztowny.pl
83.230.4.9	A	protiming.pl
83.230.4.9	A	mail.go4adventure.pl
83.230.4.171	A	83.230.4.171.zubrzyk.pirx.pl
83.230.5.15	A	mail.alivecd.org
83.230.5.15	A	ns.amarti.pl
83.230.5.15	A	amarti.pl
83.230.5.61	A	mimuma.pl
83.230.5.255	A	83.230.5.255.zubrzyk.pirx.pl
83.230.6.0	PTR	83.230.6.0.4net.gl.digi.pl
83.230.6.13	A	poczta.nomak.pl
83.230.7.13	A	ip13-jotanet.gl.digi.pl
83.230.7.14	A	ip14-jotanet.gl.digi.pl
83.230.7.46	A	poczta.andcom.net.pl
83.230.7.46	A	andcom.net.pl
83.230.7.46	A	poczta.andcom.eu
83.230.7.58	A	ip58-jotanet.gl.digi.pl
83.230.7.64	A+PTR	ip64-jotanet.gl.digi.pl
83.230.7.65	A+PTR	ip65-jotanet.gl.digi.pl
83.230.7.70	A	ip70-jotanet.gl.digi.pl
83.230.7.78	A	ip78-jotanet.gl.digi.pl
83.230.7.109	A	ip109-jotanet.gl.digi.pl
83.230.7.126	A	ip126-jotanet.gl.digi.pl
83.230.7.165	A	ip165-jotanet.gl.digi.pl
83.230.7.179	A	ip179-jotanet.gl.digi.pl
83.230.7.180	A	ns1.lucas.net.pl
83.230.7.180	A	lucas.net.pl
83.230.11.64	PTR	83.230.11.64.gl.digi.pl
83.230.11.65	PTR	83.230.11.65.gl.digi.pl
83.230.11.98	PTR	83.230.11.98.gl.digi.pl
83.230.11.129	PTR	83.230.11.129.gl.digi.pl
83.230.11.160	PTR	83.230.11.160.gl.digi.pl
83.230.11.161	PTR	83.230.11.161.gl.digi.pl
83.230.11.192	PTR	83.230.11.192.gl.digi.pl
83.230.13.2	PTR	ip2-p1.jotanet.eu
83.230.14.23	A+PTR	core.lagodzic.com
83.230.14.23	A	lagodzic.com
83.230.14.30	PTR	danton.com.pl
83.230.14.30	A	ns1.proqel.com
83.230.14.30	A	jattaman.eu
83.230.14.145	PTR	83.230.14.145.obslugapc.pl
83.230.14.145	A	integra-gliwice.dyndns.biz
83.230.14.145	A	poczta.integra.gliwice.pl
83.230.14.167	PTR	83.230.14.167.obslugapc.pl
83.230.14.167	A	belhurst.pl
83.230.14.211	PTR	83.230.14.211.obslugapc.pl
83.230.14.216	PTR	83.230.14.216.obslugapc.pl
83.230.14.249	PTR	83.230.14.249.obslugapc.pl
83.230.23.226	A	debacom.digi.pl