Robtex

Up: 178.237.42.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 178.237.42.0/25
Down right: 178.237.42.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
178.237.42.0	PTR	a3871.openict.atom86.net
178.237.42.2	PTR	a3871.openict.atom86.net
178.237.42.5	A	rgroenendijk.nl
178.237.42.19	PTR	a3871.openict.atom86.net
178.237.42.25	PTR	a3871.openict.atom86.net
178.237.42.27	PTR	a3871.openict.atom86.net
178.237.42.30	PTR	a3871.openict.atom86.net
178.237.42.35	A	toolbar.urban-vpn.com
178.237.42.37	PTR	a3871.openict.atom86.net
178.237.42.38	PTR	a3871.openict.atom86.net
178.237.42.38	A	ns1.biscience.com
178.237.42.39	PTR	a3871.openict.atom86.net
178.237.42.39	A	geosurf.es
178.237.42.39	A	biscience.net
178.237.42.40	PTR	mail.biscience.com
178.237.42.40	A	toolbar.urban-vpn.com
178.237.42.40	A	geosurf.com
178.237.42.43	A	proxysurf.co
178.237.42.46	PTR	a3871.openict.atom86.net
178.237.42.46	A	ns2.biscience.com
178.237.42.47	PTR	a3871.openict.atom86.net
178.237.42.80	PTR	a3871.openict.atom86.net
178.237.42.109	PTR	a3871.openict.atom86.net
178.237.42.110	PTR	a3871.openict.atom86.net
178.237.42.120	PTR	a3871.openict.atom86.net
178.237.42.146	PTR	a3871.openict.atom86.net
178.237.42.157	PTR	a3871.openict.atom86.net
178.237.42.163	PTR	a3871.openict.atom86.net
178.237.42.172	PTR	a3871.openict.atom86.net
178.237.42.177	PTR	a3871.openict.atom86.net
178.237.42.180	PTR	a3871.openict.atom86.net
178.237.42.183	PTR	a3871.openict.atom86.net
178.237.42.248	PTR	a3871.openict.atom86.net
178.237.42.254	PTR	a3871.openict.atom86.net
178.237.42.255	PTR	a3871.openict.atom86.net