Robtex

Up: 193.141.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.141.68.0/23
Down right: 193.141.70.0/23

IP	Type	Hostname
193.141.69.94	PTR	pop3.e-val.nl
193.141.70.24	PTR	static.kpn.net
193.141.70.58	PTR	static.kpn.net
193.141.70.71	PTR	static.kpn.net
193.141.70.109	PTR	static.kpn.net
193.141.70.137	PTR	static.kpn.net
193.141.70.164	PTR	static.kpn.net
193.141.70.176	PTR	static.kpn.net
193.141.70.189	PTR	static.kpn.net
193.141.70.217	PTR	static.kpn.net
193.141.70.238	PTR	static.kpn.net
193.141.71.27	PTR	static.kpn.net
193.141.71.72	PTR	static.kpn.net
193.141.71.73	PTR	static.kpn.net
193.141.71.107	PTR	static.kpn.net
193.141.71.127	PTR	static.kpn.net
193.141.71.128	PTR	static.kpn.net
193.141.71.147	PTR	static.kpn.net
193.141.71.157	PTR	static.kpn.net
193.141.71.158	PTR	static.kpn.net
193.141.71.174	PTR	static.kpn.net
193.141.71.186	A	mail.aqua-mar.nl
193.141.71.244	PTR	static.kpn.net
193.141.71.245	PTR	static.kpn.net