Robtex

Up: 193.141.90.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.141.90.0/25
Down right: 193.141.90.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.141.90.25	PTR	static.kpn.net
193.141.90.28	PTR	static.kpn.net
193.141.90.30	PTR	static.kpn.net
193.141.90.67	PTR	static.kpn.net
193.141.90.87	PTR	static.kpn.net
193.141.90.138	PTR	static.kpn.net
193.141.90.175	PTR	static.kpn.net
193.141.90.179	A	pop.riwal.com
193.141.90.186	PTR	mail.replacedirect.com
193.141.90.186	PTR	mail.twindis.com
193.141.90.186	A	mail.laptopbatterijen.eu
193.141.90.206	PTR	static.kpn.net
193.141.90.217	PTR	static.kpn.net
193.141.90.248	PTR	static.kpn.net