Robtex

Up: 193.141.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.141.40.0/23
Down right: 193.141.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.141.40.1	PTR	193-141-40-1.as286.net
193.141.40.3	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.40.3	A	xlink3.xlink.net
193.141.40.16	PTR	193-141-40-16.de.kpn-eurorings.net
193.141.40.17	PTR	ffm-s1-rou-1101.de.eurorings.net
193.141.40.17	A	kqtravel.de
193.141.40.18	PTR	ffm-s1-rou-1102.de.eurorings.net
193.141.40.20	A+PTR	mx-self01.de.kpn-eurorings.net
193.141.40.20	A	mxsin.de.kpn-eurorings.net
193.141.40.20	A	mx-self.de.kpn-eurorings.net
193.141.40.29	PTR	193-141-40-29.de.kpn-eurorings.net
193.141.40.29	A	rad01.de.kpn-eurorings.net
193.141.40.31	PTR	193-141-40-31.de.kpn-eurorings.net
193.141.40.35	PTR	193-141-40-35.de.kpn-eurorings.net
193.141.40.41	PTR	xlink41.nic.xlink.net
193.141.40.42	PTR	dns.nic.xlink.net
193.141.40.43	PTR	193-141-40-43.de.kpn-eurorings.net
193.141.40.43	A	projektmanagercni-gesucht.de
193.141.40.43	A	productmanagersecurity-gesucht.de
193.141.40.47	PTR	193-141-40-47.de.kpn-eurorings.net
193.141.40.65	A+PTR	npeer.de.kpn-eurorings.net
193.141.40.68	A+PTR	npeer.de.kpn-eurorings.net
193.141.40.72	PTR	193-141-40-72.de.kpn-eurorings.net
193.141.40.114	A+PTR	ns1.de.kpn-eurorings.net
193.141.40.115	A+PTR	nsz1.de.kpn-eurorings.net
193.141.40.123	PTR	193-141-40-123.de.kpn-eurorings.net
193.141.40.196	A+PTR	mx-cust02.de.kpn-eurorings.net
193.141.40.196	A	mx.de.kpn-eurorings.net
193.141.40.199	PTR	193-141-40-199.de.kpn-eurorings.net
193.141.40.204	A+PTR	mx-self02.de.kpn-eurorings.net
193.141.40.204	A	mxsin.de.kpn-eurorings.net
193.141.40.204	A	mx-self.de.kpn-eurorings.net
193.141.40.212	A	operations-bu.kpn-international.com
193.141.40.213	A	operations-bu-e1000g82000.kpn-international.com
193.141.40.214	A	operations-bu-e1000g82001.kpn-international.com
193.141.40.236	A+PTR	mx-cust01.de.kpn-eurorings.net
193.141.40.236	A	mx.de.kpn-eurorings.net
193.141.41.32	PTR	193-141-41-32.de.kpn-eurorings.net
193.141.41.35	PTR	193-141-41-35.de.kpn-eurorings.net
193.141.41.39	PTR	as286.net
193.141.41.39	A	www.kpneurorings.net
193.141.41.39	A	www.eu.net
193.141.41.41	PTR	routed-static-pa.de.kpn-eurorings.net
193.141.41.41	A	nszm01.de.kpn-eurorings.net
193.141.41.67	PTR	193-141-41-67.de.kpn-eurorings.net
193.141.41.79	PTR	193-141-41-79.de.kpn-eurorings.net
193.141.41.87	A+PTR	mx-self02-2.de.kpn-eurorings.net
193.141.41.99	PTR	193-141-41-99.de.kpn-eurorings.net
193.141.41.148	A	zonesrv04.de.kpn-eurorings.net
193.141.41.155	A+PTR	tools2.kpn-international.com
193.141.41.159	PTR	193-141-41-159.de.kpn-eurorings.net
193.141.41.163	PTR	193-141-41-163.de.kpn-eurorings.net
193.141.41.164	A+PTR	syslog01.de.kpn-eurorings.net
193.141.41.167	PTR	193-141-41-167.de.kpn-eurorings.net
193.141.41.187	PTR	g3g01-2.as286.net
193.141.41.187	A	g3g01-2.de.kpn-eurorings.net
193.141.41.188	A	g3g01.de.kpn-eurorings.net
193.141.41.195	PTR	193-141-41-195.de.kpn-eurorings.net
193.141.41.196	A+PTR	tools.kpn-international.com
193.141.41.204	PTR	dssd-s2-rou-1102.de.eurorings.net
193.141.41.212	A	syslog02.de.kpn-eurorings.net
193.141.41.215	PTR	193-141-41-215.de.kpn-eurorings.net
193.141.41.220	A	g3g02.de.kpn-eurorings.net
193.141.41.241	A	operations-e1000g82000.kpn-international.com
193.141.41.242	A	operations-e1000g82001.kpn-international.com
193.141.41.243	A	operations.kpn-international.com
193.141.41.246	PTR	193-141-41-246.de.kpn-eurorings.net
193.141.41.254	PTR	ffm-s1-rou-110x.de.eurorings.net
193.141.42.0	PTR	routed-static-pa.de.kpn-eurorings.net
193.141.42.3	A	waterroof0x-e0-0-100-1.de.kpn-eurorings.net
193.141.42.5	PTR	routed-static-pa.de.kpn-eurorings.net
193.141.42.42	PTR	ganesh.de.kpn-eurorings.net
193.141.42.42	PTR	ganesh.ka.xlink.net
193.141.42.42	A	relayi.xlink.net
193.141.42.44	A+PTR	cousin.de.kpn-eurorings.net
193.141.42.46	A+PTR	etamin.de.kpn-eurorings.net
193.141.42.48	PTR	routed-static-pa.de.kpn-eurorings.net
193.141.42.57	A+PTR	xlink57.xlink.net
193.141.42.62	A	charon.de.kpn-eurorings.net
193.141.42.65	PTR	193-141-42-65.de.kpn-eurorings.net
193.141.42.73	PTR	193-141-42-73.de.kpn-eurorings.net
193.141.42.89	PTR	193-141-42-89.de.kpn-eurorings.net
193.141.42.91	PTR	193-141-42-91.de.kpn-eurorings.net
193.141.42.96	PTR	193-141-42-96.de.kpn-eurorings.net
193.141.42.96	A	xlink96.xlink.net
193.141.42.122	PTR	193-141-42-122.de.kpn-eurorings.net
193.141.42.123	PTR	193-141-42-123.de.kpn-eurorings.net
193.141.42.160	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.42.209	A	charon.de.kpn-eurorings.net
193.141.42.210	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.42.210	A	xod.kpnqwest.de
193.141.42.218	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.42.223	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.42.228	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.42.228	A	deanna.de.kpn-eurorings.net
193.141.42.229	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.42.229	A	pavel.de.kpn-eurorings.net
193.141.42.230	PTR	193-141-42-230-i.as286.net
193.141.42.230	A	charon.de.kpn-eurorings.net
193.141.42.233	A	charon.de.kpn-eurorings.net
193.141.42.253	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.43.2	A+PTR	nidan.de.kpn-eurorings.net
193.141.43.2	A	mail.ffm.xlink.net
193.141.43.2	A	ffm.xlink.net
193.141.43.3	PTR	shodan.eurorings.net
193.141.43.5	PTR	193-141-43-5.de.kpn-eurorings.net
193.141.43.30	PTR	193-141-43-30.de.kpn-eurorings.net
193.141.43.31	PTR	193-141-43-31.de.kpn-eurorings.net
193.141.43.115	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.43.118	PTR	unused-static-pa.de.kpn-eurorings.net
193.141.43.129	PTR	193-141-43-129.de.kpn-eurorings.net
193.141.43.130	PTR	193-141-43-130.de.kpn-eurorings.net
193.141.43.138	PTR	193-141-43-138.de.kpn-eurorings.net
193.141.43.142	PTR	193-141-43-142.de.kpn-eurorings.net
193.141.43.158	A+PTR	traceroute.org
193.141.43.158	A	www.traceroute.org
193.141.43.225	PTR	193-141-43-225.de.kpn-eurorings.net
193.141.43.235	PTR	193-141-43-235.de.kpn-eurorings.net
193.141.43.244	PTR	nread-ng.de.kpn-eurorings.net
193.141.43.244	A	nread.de.kpn-eurorings.net