Robtex

Up: 193.91.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 193.91.16.0/21
Down right: 193.91.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.91.16.0	PTR	193-91-16-0.static.ip.netia.com.pl
193.91.16.80	PTR	193-91-16-80.ip.netia.com.pl
193.91.16.255	A	193-91-16-255.static.ip.netia.com.pl
193.91.21.156	A	marker-volkl.com
193.91.21.156	A	marker-voelkl.com
193.91.24.2	PTR	193-91-24-2.ip.netia.com.pl
193.91.24.2	A	newsletteropen.pl
193.91.24.145	PTR	193-91-24-145.ip.netia.com.pl
193.91.24.153	A	193-91-24-153.static.ip.netia.com.pl
193.91.25.14	A	biotech.eu.org
193.91.25.37	A	dart.one.pl
193.91.25.96	A+PTR	193-91-25-96.static.ip.netia.com.pl
193.91.25.112	PTR	193-91-25-112.static.ip.netia.com.pl
193.91.25.239	A	193-91-25-239.static.ip.netia.com.pl
193.91.26.16	A+PTR	193-91-26-16.ip.netia.com.pl
193.91.26.32	A+PTR	193-91-26-32.static.ip.netia.com.pl
193.91.26.34	PTR	linux.cku.wroc.pl
193.91.26.34	A	margat.pl
193.91.26.34	A	dompielgrzyma.pl
193.91.26.64	A	193-91-26-64.ip.netia.com.pl
193.91.26.130	A+PTR	poczta.masterlease.pl
193.91.26.130	A	poczta.futura.com.pl
193.91.26.131	A+PTR	mickey.futura.com.pl
193.91.26.131	A	www.lumax.com.pl
193.91.26.152	A	193-91-26-152.static.ip.netia.com.pl
193.91.26.159	A	193-91-26-159.static.ip.netia.com.pl
193.91.27.0	A	193-91-27-0.static.ip.netia.com.pl
193.91.27.31	A	193-91-27-31.static.ip.netia.com.pl
193.91.27.32	A+PTR	193-91-27-32.static.ip.netia.com.pl
193.91.27.50	A+PTR	193-91-27-50.static.ip.netia.com.pl
193.91.27.50	A	albert.expert.wroc.pl
193.91.27.50	A	dns.expert.wroc.pl
193.91.27.51	PTR	193-91-27-51.ip.netia.com.pl
193.91.27.51	A	as.igrt.pl
193.91.27.96	PTR	193-91-27-96.static.ip.netia.com.pl
193.91.27.99	PTR	uran.elbud.krakow.pl
193.91.27.130	A+PTR	193-91-27-130.static.ip.netia.com.pl
193.91.27.131	PTR	netmex.pl
193.91.27.131	A	mail.tsx.pl
193.91.27.134	A	www.tsx.pl
193.91.27.134	A	tsx.pl
193.91.27.244	A	193-91-27-244.static.ip.netia.com.pl
193.91.28.70	A	193-91-28-70.static.ip.netia.com.pl
193.91.29.1	A	193-91-29-1.static.ip.netia.com.pl
193.91.29.194	PTR	skb.pl
193.91.30.1	PTR	193-91-30-1.static.ip.netia.com.pl
193.91.30.186	A	ns4.cdp.pl
193.91.30.255	A	5-ktg.cdpnetia.pl
193.91.31.14	A	193-91-31-14.static.ip.netia.com.pl
193.91.31.255	A	193-91-31-255.static.ip.netia.com.pl