Robtex

Up: 193.141.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 193.141.0.0/21
Down right: 193.141.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.141.0.0	PTR	193-141-0-0.as286.net
193.141.0.50	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.0.82	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.1.0	PTR	193-141-1-0.as286.net
193.141.1.1	PTR	193-141-1-1.de.kpn-eurorings.net
193.141.1.98	PTR	193-141-1-98.de.kpn-eurorings.net
193.141.2.2	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.2.2	A	nidan.de.kpn-eurorings.net
193.141.3.6	A	ulm.nic.xlink.net
193.141.3.6	A	ns1.strato.de
193.141.3.6	A	ns1.strato.com
193.141.3.65	PTR	a01.rzone.de
193.141.3.65	A	sr-data.eu
193.141.3.65	A	silentgreen.de
193.141.3.66	PTR	a02.rzone.de
193.141.3.67	PTR	a03.rzone.de
193.141.4.0	PTR	static.kpn.net
193.141.5.50	PTR	static.kpn.net
193.141.5.97	PTR	static.kpn.net
193.141.5.113	PTR	static.kpn.net
193.141.5.129	PTR	static.kpn.net
193.141.5.163	PTR	static.kpn.net
193.141.5.185	A	mail.matibv.nl
193.141.5.211	PTR	s1.defcert.nl
193.141.6.240	PTR	static.kpn.net
193.141.7.177	A	mail.getc.nl
193.141.7.177	A	mail.empire-distribution.nl
193.141.7.202	A	mail2.schijvensmode.nl
193.141.7.208	PTR	static.kpn.net
193.141.9.62	A	mail.sortimo.nl
193.141.9.67	PTR	mail.k3.nl
193.141.11.162	PTR	static.kpn.net
193.141.11.162	A	remote.pluimers.be
193.141.12.82	PTR	static.kpn.net
193.141.13.2	PTR	static.kpn.net
193.141.13.3	PTR	mail.summit.nl
193.141.13.235	A	mail.adams.nl
193.141.14.35	PTR	static.kpn.net
193.141.14.208	PTR	static.kpn.net
193.141.15.66	PTR	static.kpn.net
193.141.15.67	PTR	static.kpn.net