Robtex

Up: 5.56.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.56.16.0/22
Down right: 5.56.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.56.16.17	PTR	exchange.ovuset.com
5.56.16.17	A	drugrehabflorida.info
5.56.16.18	PTR	share.ovuset.com
5.56.16.18	A	drugrehabgeorgia.info
5.56.16.19	PTR	offers.ovuset.com
5.56.16.19	A	drugrehabhawaii.info
5.56.16.21	A	drugrehabillinois.info
5.56.16.25	PTR	specific.ovuset.com
5.56.16.89	PTR	avatz.barrown.com
5.56.16.113	PTR	research.evarefl.com
5.56.16.114	PTR	wide.evarefl.com
5.56.16.115	PTR	design.evarefl.com
5.56.16.122	PTR	traffic.evarefl.com
5.56.16.139	PTR	lights.gnistro.com
5.56.16.153	PTR	cercle.gnistro.com
5.56.16.176	PTR	customer.hammedi.com
5.56.16.184	PTR	specific.hammedi.com
5.56.16.187	PTR	remairs.com
5.56.16.194	PTR	european.remairs.com
5.56.16.203	PTR	available.remairs.com
5.56.16.217	PTR	zoom.remairs.com
5.56.16.218	PTR	scittl.com
5.56.16.244	PTR	february.scittl.com
5.56.17.18	PTR	core-backbone.cdn77.com
5.56.17.94	PTR	core-backbone.bitcommand.com
5.56.17.110	PTR	de.fra02.cb.epcan.de
5.56.17.125	PTR	ae1-470.nbg30.core-backbone.com
5.56.17.130	PTR	nl.ams02.cb.epcan.de
5.56.17.174	PTR	core-backbone.fra3.meerfarbig.net
5.56.18.1	PTR	ae2-2077.fra20.core-backbone.com
5.56.18.2	PTR	ae6-2077.lon10.core-backbone.com
5.56.18.2	A	dc-334.ptoserver.com
5.56.18.70	A	corebackbone1-nikhef.r1.dbc.nl.as43350.com
5.56.18.90	PTR	currently.sofamilly.com
5.56.18.90	A	dc-334.ptoserver.com
5.56.18.94	A	dc-324.ptoserver.com
5.56.18.128	PTR	rev.infotayo.com
5.56.18.210	PTR	core-backbone.microfocus.com
5.56.19.28	A	drugrehabarkansas.info
5.56.19.29	A	drugrehabcalifornia.info
5.56.19.31	A	drugrehabconnecticut.info
5.56.22.2	A	core-002-server.consultorpc.com
5.56.22.5	A	guiasdemadrid.es
5.56.22.5	A	hellmur.com
5.56.22.5	A	artwebgestion.com
5.56.22.11	PTR	nereoconsulting.com
5.56.22.11	A	unidadcontrol.com
5.56.22.11	A	inventaria.es
5.56.22.12	A	core-012-server.consultorpc.com
5.56.22.12	A	ip-zone.com
5.56.22.16	PTR	tinia.consultorpc.com
5.56.22.16	A	consultorpc.com
5.56.22.16	A	www.consultorpc.com
5.56.22.17	PTR	tinia.consultorpc.com
5.56.22.19	A	core-019-server.consultorpc.com
5.56.22.20	A	mailrelay.es
5.56.22.25	PTR	zimbra.ip-zone.com
5.56.22.25	A	zimbra.consultorpc.com
5.56.22.30	A	motisa.net
5.56.22.30	A	www.motisa.net
5.56.22.30	A	motisa.es
5.56.22.32	PTR	coordinadoraongd.org
5.56.22.32	A	mail.coordinadoraongd.org
5.56.22.32	A	coordinadoraongd.es
5.56.22.35	PTR	core-035-server.consultorpc.com
5.56.22.50	A+PTR	tns.consultorpc.com
5.56.22.50	A	mail.seat-tns.com
5.56.22.50	A	mail.vw-tns.com
5.56.22.56	PTR	funitecno.com
5.56.22.56	A	mail.funirey.fr
5.56.22.56	A	funirey-technology.com
5.56.22.57	PTR	apmib.com
5.56.22.67	A+PTR	host.mailrelay.com
5.56.22.67	A	www.mailrelay.com.br
5.56.22.67	A	mailrelay.com.br
5.56.22.68	A	smsrelay.es
5.56.22.81	A	conmigonline.net
5.56.22.81	A	sanrafaellifestyle.com
5.56.22.81	A	www.puertademadrid.es
5.56.22.90	A+PTR	st1.ip-zone.com
5.56.22.90	A	antispam.consultorpc.com
5.56.22.100	A	extranet.consultorpc.com
5.56.22.100	A	extranet.ip-zone.com
5.56.22.154	A	core-154-server.consultorpc.com
5.56.22.164	A	core-164-server.dyd.es
5.56.22.175	A	core-175-server.dyd.es
5.56.22.200	PTR	core-200-server.consultorpc.com
5.56.22.200	A	smtp.ip-zone.com
5.56.22.211	A+PTR	admin.consultorpc.com
5.56.22.232	PTR	core-232-server.consultorpc.com
5.56.22.235	PTR	core.mailrelay-i.com
5.56.22.236	A	core-236-server.consultorpc.com
5.56.23.2	A+PTR	smtp10.emlinb.eu
5.56.23.2	A	rhetland.com
5.56.23.2	A	datestella.com
5.56.23.10	A+PTR	smtp11.emlinb.eu
5.56.23.15	A	smtp16.emlinb.eu
5.56.23.16	A+PTR	smtp17.emlinb.eu
5.56.23.17	A+PTR	smtp18.emlinb.eu
5.56.23.18	PTR	articles.hergro.com
5.56.23.20	A	smtp123.mncrdom.eu
5.56.23.21	A	smtp124.mncrdom.eu
5.56.23.24	A+PTR	smtp127.mncrdom.eu
5.56.23.25	A+PTR	smtp128.mncrdom.eu
5.56.23.26	A+PTR	smtp129.mncrdom.eu
5.56.23.27	A	smtp130.mncrdom.eu
5.56.23.35	A+PTR	smtp26.emlinb.eu
5.56.23.36	A	smtp27.emlinb.eu
5.56.23.37	A	smtp28.emlinb.eu
5.56.23.38	A	smtp29.emlinb.eu
5.56.23.43	PTR	mail7.emailspeed.eu
5.56.23.48	PTR	mail12.emailspeed.eu
5.56.23.49	A+PTR	m44.desrv.net
5.56.23.50	A+PTR	m45.desrv.net
5.56.23.51	A+PTR	smtp133.mncrdom.eu
5.56.23.52	A	smtp134.mncrdom.eu
5.56.23.61	A	r1.ondisplay.ro
5.56.23.62	A	r2.ondisplay.ro
5.56.23.63	A	r3.ondisplay.ro
5.56.23.64	A+PTR	r4.ondisplay.ro
5.56.23.65	A+PTR	r5.ondisplay.ro
5.56.23.66	A+PTR	r6.ondisplay.ro
5.56.23.67	A+PTR	r7.ondisplay.ro
5.56.23.72	A+PTR	m2.developernews.eu
5.56.23.73	A+PTR	m3.developernews.eu
5.56.23.74	A+PTR	m4.developernews.eu
5.56.23.75	A+PTR	m5.developernews.eu
5.56.23.81	A+PTR	smtp1.eliwebinar.eu
5.56.23.82	A+PTR	smtp2.eliwebinar.eu
5.56.23.83	A+PTR	smtp3.eliwebinar.eu
5.56.23.84	A	smtp4.eliwebinar.eu
5.56.23.100	A	m1.highedualliance.eu
5.56.23.104	A	manardia.com
5.56.23.113	A+PTR	smtp54.emlinb.eu
5.56.23.114	A+PTR	smtp55.emlinb.eu
5.56.23.115	A	smtp56.emlinb.eu
5.56.23.116	A	smtp57.emlinb.eu
5.56.23.120	A+PTR	smtp61.emlinb.eu
5.56.23.121	A+PTR	smtp62.emlinb.eu
5.56.23.122	A+PTR	smtp63.emlinb.eu