Robtex

Up: 193.23.174.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.23.174.0/25
Down right: 193.23.174.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.23.174.2	A+PTR	groucho.inos.waw.pl
193.23.174.2	A+PTR	groucho.klaudyny.waw.pl
193.23.174.2	A	klaudyny.waw.pl
193.23.174.6	A+PTR	burba.klaudyny.waw.pl
193.23.174.11	PTR	mailnat14.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.12	PTR	mailnat16.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.13	PTR	mailnat18.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.14	PTR	mailnat28.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.15	PTR	mailnat30.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.16	PTR	mailnat32.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.17	PTR	mailnat33.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.18	PTR	mailnat34.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.19	PTR	mailnat36.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.20	PTR	mailnat38.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.21	PTR	mailnatdomki.klaudyny.waw.pl.174.23.193.in-addr.arpa
193.23.174.32	PTR	zbiechu.klaudyny.waw.pl
193.23.174.33	PTR	torn.klaudyny.waw.pl
193.23.174.35	A+PTR	kaczor.klaudyny.waw.pl
193.23.174.36	PTR	obt.com.pl
193.23.174.37	PTR	arti.klaudyny.waw.pl
193.23.174.39	PTR	cichy.klaudyny.waw.pl
193.23.174.41	PTR	skinu.klaudyny.waw.pl
193.23.174.46	PTR	slanmor.klaudyny.waw.pl
193.23.174.61	PTR	finarfin.klaudyny.waw.pl
193.23.174.68	PTR	molnas.klaudyny.waw.pl
193.23.174.70	PTR	it5.klaudyny.waw.pl
193.23.174.75	PTR	krajek.klaudyny.waw.pl
193.23.174.90	PTR	poczta2.m2net.pl.174.23.193.in-addr.arpa
193.23.174.254	PTR	harpo.klaudyny.waw.pl
193.23.174.254	A+PTR	router.klaudyny.waw.pl
193.23.174.254	A+PTR	chico.inos.waw.pl