Robtex

Up: 193.141.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 193.141.0.0/22
Down right: 193.141.4.0/22
(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
193.141.0.59	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.0.72	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
193.141.3.10	A	gabi-schwarzmann.de
193.141.3.10	A	mardak.de
193.141.3.10	A	labaguette-ka.de
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
193.141.3.72	PTR	a08.rzone.de
193.141.3.72	A	interrescue.de
193.141.3.72	A	leiss-juengert.de
193.141.3.73	PTR	a09.rzone.de
193.141.3.74	PTR	a0a.rzone.de
193.141.3.75	PTR	a0b.rzone.de
193.141.4.0	PTR	static.kpn.net
193.141.5.8	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
193.141.5.122	PTR	static.kpn.net
193.141.5.129	PTR	static.kpn.net
193.141.5.163	PTR	static.kpn.net
193.141.5.185	PTR	static.kpn.net
193.141.5.185	A	mail.matibv.nl
193.141.5.211	PTR	s1.defcert.nl
193.141.5.233	PTR	static.kpn.net
193.141.5.250	PTR	static.kpn.net
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