Robtex

Up: 89.251.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 89.251.128.0/21
Down right: 89.251.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.251.128.1	A	fw128.microplan.de
89.251.128.5	A+PTR	ns01.rz-24.de
89.251.128.6	A	ns-pri.microplan.de
89.251.128.8	A	monitor.microplan.de
89.251.128.14	A	vgate.microplan.de
89.251.128.14	A	mpmxin01.microplan.de
89.251.128.15	A	vgate.microplan.de
89.251.128.15	A	mpmxin01.microplan.de
89.251.128.16	A+PTR	gw.microplan.de
89.251.128.16	A	mail02.mx.microplan.de
89.251.128.20	A+PTR	mailin01.in.rz-24.de
89.251.128.21	PTR	mail.deltacity.net
89.251.128.21	A	mailin01.in.rz-24.de
89.251.128.22	A	smtp.rz-24.de
89.251.128.24	A	mpmxin01.microplan.de
89.251.128.27	A	smtp.rz-24.de
89.251.128.27	A	smtp02.out.rz-24.de
89.251.128.32	A+PTR	smtp02.out.rz-24.de
89.251.128.37	A+PTR	smtp03.out.rz-24.de
89.251.128.37	A	smtp04.mx.deltacity.net
89.251.128.44	A	smtpmx07.in.rz-24.de
89.251.128.47	A	webmail.mp-mail.de
89.251.128.50	A+PTR	webmail.mp-mail.de
89.251.128.50	A	mail.fdfbeijing.com
89.251.128.50	A	mp-mail.de
89.251.128.52	A+PTR	hosting01.microplan.de
89.251.128.71	PTR	smtpmx08.in.rz-24.de
89.251.128.71	A	mail.nothdurft-personalservice.de
89.251.128.71	A	vgate.microplan.de
89.251.128.72	PTR	smtpmx09.in.rz-24.de
89.251.128.72	A	vgate.microplan.de
89.251.128.72	A	mpmxin01.microplan.de
89.251.128.80	A	mail.infas-enermetric.de
89.251.128.111	A	ispconfig.rz-24.de
89.251.128.114	A+PTR	securesmtp.rz-24.de
89.251.128.114	A	mx01.in.rz-24.de
89.251.128.165	A	mpmxin01.microplan.de
89.251.128.166	PTR	smtpmx04.microplan.de
89.251.128.166	A	smtpmx06.microplan.de
89.251.128.220	A	pop.deltacity.net
89.251.128.220	A	pop.rz-24.de
89.251.128.221	PTR	smtp3.mx.deltacity.net
89.251.128.221	A	smtp02.out.rz-24.de
89.251.128.231	A	vgate01.microplan.de
89.251.128.231	A	smtpvg01.rz-24.de
89.251.128.232	A	smtpvg02.rz-24.de
89.251.128.232	A	smtpmx02.microplan.de
89.251.128.234	PTR	smtpmx04.microplan.de
89.251.129.5	PTR	vshop2.deltacity.net
89.251.129.14	A	myapetito.nl
89.251.129.14	A	myapetito.de
89.251.129.14	A	wedi.co.uk
89.251.129.16	PTR	multihost6.deltacity.net
89.251.129.18	PTR	multihost8.deltacity.net
89.251.129.19	PTR	multihost9.deltacity.net
89.251.129.20	A	drk-blut.de
89.251.129.20	A	drk-blutspendedienst.info
89.251.129.20	A	www.bsdhessen.de
89.251.129.35	PTR	knochenmark.deltacity.net
89.251.129.36	PTR	aeromarkt.deltacity.net
89.251.129.45	A	myhewing.com
89.251.129.45	A	tiertex.de
89.251.129.48	PTR	web03.deltacity.net
89.251.131.2	A	router.microplan.de
89.251.131.10	A+PTR	bgmail.mp-asp.de
89.251.131.10	A	mail.baeder-duesseldorf.de
89.251.131.11	A+PTR	bullerstellflug.mp-asp.de
89.251.131.18	A+PTR	ns02.rz-24.de
89.251.131.26	PTR	twe-02.twe.de
89.251.131.58	A	bbv-support.de
89.251.131.65	A+PTR	eureka-emsdetten.de
89.251.131.65	A	www.eureka-emsdetten.de
89.251.132.2	PTR	mail.tece.de
89.251.132.50	A	twe-02.twe.de
89.251.132.58	A	mail.juergens.net
89.251.132.154	A+PTR	mail.fey.de
89.251.132.154	A	mail.fey-co.de
89.251.132.154	A	mail.fey.lt
89.251.132.155	A	gateway.fey-co.de
89.251.132.162	A	mail.swa.de
89.251.132.179	A+PTR	securepoint.weischer.de
89.251.132.210	A	mail2.feldhaus.de
89.251.132.212	A	smtp.feldhaus.de
89.251.132.212	A	pop.feldhaus.de
89.251.132.222	A+PTR	mail.feldhaus.de
89.251.134.74	A+PTR	mail.diakonie-grafschaft.de