Robtex

Up: 194.77.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 194.77.228.0/23
Down right: 194.77.230.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.77.229.2	PTR	gate.energieagentur.nrw.de
194.77.229.5	PTR	enag5.w.vianetworks.de
194.77.229.6	PTR	enag6.w.vianetworks.de
194.77.229.7	PTR	enag7.w.vianetworks.de
194.77.229.11	A	mail.enfolio.de
194.77.229.12	PTR	enag12.w.vianetworks.de
194.77.229.17	PTR	wut1.w.revmap.vianetworks.de
194.77.229.25	A+PTR	mail.wut.de
194.77.229.25	A	mail.kultur-am-vormittag.de
194.77.229.25	A	mail.winzig-stiftung.de
194.77.229.26	PTR	wut10.w.revmap.vianetworks.de
194.77.229.29	PTR	wut13.w.revmap.vianetworks.de
194.77.229.248	PTR	wut2-net.w.revmap.vianetworks.de
194.77.230.1	A+PTR	01-transfer100.esb.de
194.77.230.2	A+PTR	02-transfer100.esb.de
194.77.230.5	A+PTR	01-transfer10.esb.de
194.77.230.6	A+PTR	02-transfer10.esb.de
194.77.230.32	PTR	transver-net.revmap.vianetworks.de
194.77.230.33	PTR	transver-01.revmap.vianetworks.de
194.77.230.36	PTR	transver-04.revmap.vianetworks.de
194.77.230.44	PTR	transver-12.revmap.vianetworks.de
194.77.230.46	PTR	transver-14.revmap.vianetworks.de
194.77.230.47	PTR	transver-bc.revmap.vianetworks.de
194.77.230.50	PTR	transver-02.revmap.vianetworks.de
194.77.230.58	A+PTR	sdsl-n2-058.ffm.pce-net-line.de
194.77.230.61	A+PTR	sdsl-n2-061.ffm.pce-net-line.de
194.77.230.62	A+PTR	sdsl-n2-062.ffm.pce-net-line.de
194.77.230.78	PTR	mailgate.molkerei-bgl.de
194.77.230.123	PTR	03.lan.esb.de
194.77.230.135	A	onlineservice.esb.de
194.77.230.138	PTR	mx0.esb.de
194.77.230.138	A	mx0.esb-waerme.de
194.77.230.138	A	mx0.eve-erdgas.de
194.77.230.139	PTR	mx1.esb.de
194.77.230.153	A	webmail.esb.de
194.77.230.222	A+PTR	mail.hammel.de
194.77.230.222	A	mail.solewerk.de
194.77.230.227	A+PTR	mail.roechling.net
194.77.230.227	A	mail.fraxini.com