Robtex

Up: 80.82.18.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 80.82.19.0/25
Down right: 80.82.19.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.82.19.1	PTR	80.82.19.1.s.net.pl
80.82.19.2	PTR	mail.softelnet.pl
80.82.19.2	A	marduk.zst-softel.pl
80.82.19.2	A	dns1.softelnet.com
80.82.19.3	PTR	80.82.19.3.s.net.pl
80.82.19.4	A	softelnet.com
80.82.19.4	A	dns2.softelnet.com
80.82.19.4	A	dns1.ftthdesignstudio.com
80.82.19.9	A+PTR	mail.demetes.pl
80.82.19.9	A	demetes.pl
80.82.19.10	A+PTR	ns2.ecatio.pl
80.82.19.10	A	dns2.softelnet.com
80.82.19.10	A	dns2.zst-softel.pl
80.82.19.11	PTR	ns.ecatio.pl
80.82.19.11	A	ns1.ecatio.pl
80.82.19.12	A+PTR	app.ecatio.pl
80.82.19.13	PTR	softelnet.s-net.info
80.82.19.13	A	www.ecatio.pl
80.82.19.13	A	e-catio.pl
80.82.19.14	A+PTR	mail.ecatio.pl
80.82.19.23	A	smtp2.softelnet.pl
80.82.19.25	A	mail.requinno.com
80.82.19.25	A	requinno.pl
80.82.19.25	A	workside.pl
80.82.19.26	A	mail.requinno.pl
80.82.19.50	A+PTR	s1.lingualand.eu
80.82.19.50	A	lingualand.eu
80.82.19.50	A	www.lingualand.eu
80.82.19.52	A+PTR	vipga.karmelicka.edu.pl
80.82.19.52	A	karmelicka.edu.pl
80.82.19.178	A	crm.s4e.pl
80.82.19.199	A	ftp.euroscript.pl
80.82.19.221	A+PTR	mail3.mota-engil-ce.eu
80.82.19.234	A+PTR	mail4.mota-engil-ce.eu
80.82.19.234	A	mail5.mota-engil-ce.eu