Robtex

Up: 51.4.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 51.5.0.0/17
Down right: 51.5.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
51.5.0.1	A+PTR	ns3-01.azure-dns.de
51.5.0.2	PTR	ns3-02.azure-dns.de
51.5.0.2	A	ns1bf.4352.azuredns-bf.info
51.5.0.3	A+PTR	ns3-03.azure-dns.de
51.5.0.3	A	ns1bf.4035.azuredns-bf.info
51.5.2.1	A+PTR	ns4-01.azure-dns.de
51.5.2.2	A+PTR	ns4-02.azure-dns.de
51.5.2.2	A	ns2bf.4352.azuredns-bf.info
51.5.2.3	PTR	ns4-03.azure-dns.de
51.5.2.3	A	ns2bf.4035.azuredns-bf.info
51.5.2.4	PTR	ns4-04.azure-dns.de
51.5.4.32	A	ourallegiancetoemirofqatar.com
51.5.5.9	A	alifilm.net
51.5.64.82	A	outlook-bfsr1.office.de
51.5.64.88	A	autodiscover-bfsr1.outlook.de
51.5.64.98	A	outlook-bfsr1.office.de
51.5.64.104	A	autodiscover-bfsr1.outlook.de
51.5.64.122	A	ns3.bdm.microsoftonline.de
51.5.65.2	A	outlook-bfsr1.office.de
51.5.65.8	A	autodiscover-bfsr1.outlook.de
51.5.65.18	A	outlook-bfsr1.office.de
51.5.65.24	A	autodiscover-bfsr1.outlook.de
51.5.65.42	A	ns4.bdm.microsoftonline.de
51.5.69.11	A	sipfed.online.skype.de
51.5.69.14	A	webdir.online.skype.de
51.5.69.14	A	meet.skype.de
51.5.71.170	A	ns2.windowsazure.de
51.5.71.170	A	ns2bf.3997.azuredns-bf.info
51.5.71.170	A	ns2bf.3997.azuredns-bf.org
51.5.72.113	PTR	mail-le1ger01on0113.outbound.protection.outlook.de
51.5.72.205	A	mail-le1ger01hn0205.outbound.protection.outlook.de
51.5.80.10	PTR	mail-lejger010010.inbound.protection.outlook.de
51.5.80.10	A	fadyimodzplayer-com.mail.protection.outlook.de
51.5.80.10	A	arkay-nl.mail.protection.outlook.de
51.5.136.32	A	www.prdbf.aadg.akadns.net
51.5.136.32	A	lej.b.bf.prd.aadg.trafficmanager.net
51.5.136.32	A	www.prdbftemp.aadg.akadns.net
51.5.136.33	A	www.prdbf.aadg.akadns.net
51.5.136.33	A	lej.b.bf.prd.aadg.trafficmanager.net
51.5.136.33	A	www.prdbftemp.aadg.akadns.net
51.5.136.34	A	www.prdbf.aadg.akadns.net
51.5.136.34	A	lej.b.bf.prd.aadg.trafficmanager.net
51.5.136.34	A	www.prdbftemp.aadg.akadns.net
51.5.136.35	A	www.prdbf.aadg.akadns.net
51.5.136.35	A	lej.b.bf.prd.aadg.trafficmanager.net
51.5.136.35	A	www.prdbftemp.aadg.akadns.net
51.5.136.36	A	www.prdbf.aadg.akadns.net
51.5.136.36	A	www.prdbftemp.aadg.akadns.net
51.5.136.36	A	www.prdbf.aadg.trafficmanager.net
51.5.144.36	A	lg1prdapp01-canary.azurecloudapp.de
51.5.144.49	A	wohnen-in-mv.de
51.5.144.63	A	tm2.microsoftazure.de
51.5.144.213	A	bahianinhodiadasmaes.com
51.5.145.73	A	1produtoporcliente.com
51.5.145.197	A	upgradewalmart.com
51.5.145.202	A	abrildasoff.com
51.5.146.13	A	semanado-consumidor.com
51.5.146.88	A	adquirahoje2019.com
51.5.146.96	A	tesapromotionmanager.com
51.5.146.119	A	promomagazineluizaevoce.com
51.5.147.48	A	ger.portal.office.de.akadns.net
51.5.147.156	A	bahianinofertas.com
51.5.148.13	A	ajude-sofia.com
51.5.148.46	A	upgradeponto-frio.com
51.5.148.48	A	bahianindasofertas.com
51.5.148.215	A	abrilemdescontos.com
51.5.149.35	A	findatable.ro
51.5.149.84	A	blackoutj7.com
51.5.149.115	A	mega-magazineluiza.ga
51.5.149.117	A	panelasbergamo.com
51.5.150.5	A	pascoadosempregos.com
51.5.150.15	A	marcodaspromocao.com
51.5.150.22	A	dezembermagalu.com
51.5.150.23	A	sorteioiphonexsmax.com
51.5.151.3	A	pascoa-com-saldao.com
51.5.151.101	A	vagasparaempregos.com
51.5.240.64	A	www.geoportal-hamburg.de
51.5.240.64	A	ida-hamburg.de
51.5.240.64	A	geoportal-hamburg.de
51.5.240.89	A	cloudprovdeu.azurecloudapp.de
51.5.241.234	A	didakat.de
51.5.244.255	A	aponow.de
51.5.245.52	A+PTR	wh537598.hosting.saas.zone
51.5.245.52	A	quinero.com
51.5.245.52	A	dehosted.de
51.5.247.15	A	www.mein-lesetipp.de
51.5.247.30	A	www.kind-hoerstiftung.de
51.5.247.30	A	embergeroptik.at
51.5.247.30	A	kind-hoerstiftung.de