Robtex

Up: 212.54.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 212.54.32.0/22
Down right: 212.54.36.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.54.32.1	A+PTR	pub-vips-gw.gn.iss.as9143.net
212.54.32.5	A	ziggozomerfilms.nl
212.54.32.5	A	ziggocloudnavigator.net
212.54.32.5	A	cloudnavigator.net
212.54.32.12	A+PTR	speedtest.gn.iss.as9143.net
212.54.32.15	A+PTR	monitor.ziggozakelijk.nl
212.54.32.17	PTR	mijn.ziggo.nl
212.54.32.18	A	ziggomobile.eu
212.54.32.18	A	ziggomobiel.info
212.54.32.18	A	ziggomobile.com
212.54.32.19	PTR	static.ziggo.nl
212.54.32.24	A+PTR	api.ziggo.nl
212.54.32.24	A	ziggobay.com
212.54.32.26	A+PTR	ns1.gn.iss.as9143.net
212.54.33.53	PTR	spider2.gn.portal.iss.as9143.net
212.54.33.69	PTR	static.gn.acc.portal.iss.as9143.net
212.54.33.69	A	static-acc.ziggo.nl
212.54.33.70	A	secure2-acc.ziggo.nl
212.54.33.144	A+PTR	proxy1.gn.acc.portal.iss.as9143.net
212.54.33.196	A	gtm1.gn.iss.as9143.net
212.54.33.197	A	gtm2.gn.iss.as9143.net
212.54.34.1	PTR	mail-pub-vips-gw.gn.mail.iss.as9143.net
212.54.34.4	A	pop.gn.mail.iss.as9143.net
212.54.34.5	A	webmail.mail.gtm.iss.as9143.net
212.54.34.5	A	webmail.gn.mail.iss.as9143.net
212.54.34.8	PTR	mx.mnd.mail.iss.as9143.net
212.54.34.8	A	mx.mail.gtm.iss.as9143.net
212.54.34.8	A	mx.ziggo.nl
212.54.34.9	PTR	smtp.mnd.mail.iss.as9143.net
212.54.34.16	A+PTR	webmail2.gn.mail.iss.as9143.net
212.54.34.97	A+PTR	mx-gw.gn.mail.iss.as9143.net
212.54.34.104	A+PTR	mx15.mnd.mail.iss.as9143.net
212.54.34.106	A+PTR	mx17.mnd.mail.iss.as9143.net
212.54.34.106	A	mx7.gn.mail.iss.as9143.net
212.54.34.107	PTR	mx8.gn.mail.iss.as9143.net
212.54.34.107	A	mx18.mnd.mail.iss.as9143.net
212.54.34.113	A+PTR	mx24.mnd.mail.iss.as9143.net
212.54.34.132	A	mx1.mnd.mail.iss.as9143.net
212.54.34.134	A	mx3.mnd.mail.iss.as9143.net
212.54.34.134	A	smtp3.gn.mail.iss.as9143.net
212.54.34.135	A	smtp4.gn.mail.iss.as9143.net
212.54.34.136	PTR	mx5.mnd.mail.iss.as9143.net
212.54.34.136	A	smtp5.gn.mail.iss.as9143.net
212.54.34.137	A+PTR	smtp6.gn.mail.iss.as9143.net
212.54.34.140	A	mx12.gn.mail.iss.as9143.net
212.54.34.143	A	mx16.gn.mail.iss.as9143.net
212.54.34.147	PTR	mx14.gn.mail.iss.as9143.net
212.54.34.164	A	smtpq1.mnd.mail.iss.as9143.net
212.54.34.165	A	smtpq2.mnd.mail.iss.as9143.net
212.54.34.166	A	smtpq3.gn.mail.iss.as9143.net
212.54.34.166	A	smtpq3.mnd.mail.iss.as9143.net
212.54.35.2	PTR	csw1-vlan100.zl.iss.as9143.net
212.54.35.25	A+PTR	dns.zl.iss.as9143.net
212.54.35.25	A	mischa.creative-elements.nl
212.54.35.25	A	dns-resolver1-zl-anycast.ziggo.nl
212.54.35.35	PTR	ac3.lg1tbg2d1.cdn
212.54.35.234	A+PTR	dns7.zl.iss.as9143.net
212.54.36.1	A+PTR	pub-vips-gw.amr.iss.as9143.net
212.54.36.12	A	mail.bad-arcen.nl
212.54.36.26	PTR	ns1.amr.iss.as9143.net
212.54.36.30	A	slb-pub-vips.amr.iss.as9143.net
212.54.36.38	A	*.johnbeckers.com
212.54.36.124	A	spinazie.nl
212.54.36.143	A	mail.brbinternational.com
212.54.37.123	A	castelhome.nl
212.54.37.123	A	castelathome.nl
212.54.38.26	A+PTR	ns1.gv.iss.as9143.net
212.54.38.30	A	slb-pub-vips.gv.iss.as9143.net
212.54.38.65	A	bacc-dhcp-gw.gv.bacc.iss.as9143.net
212.54.38.67	PTR	ds114-vlan121.gv.bacc.iss.as9143.net
212.54.38.80	A+PTR	cnr1.gv.bacc.iss.as9143.net
212.54.38.81	A	cnr2.gv.bacc.iss.as9143.net
212.54.38.83	PTR	cnr4.gv.bacc.iss.as9143.net
212.54.38.93	A	cnr2-t2.gv.bacc.iss.as9143.net
212.54.39.94	A	sns01.horizon.tv