Robtex

Up: 121.98.96.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 121.98.112.0/21
Down right: 121.98.120.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.98.112.38	PTR	default-rdns.vocus.co.nz
121.98.112.54	PTR	mail.isac.co.nz
121.98.112.54	PTR	smtp.isac.co.nz
121.98.112.54	A+PTR	mail.parcelexpress.co.nz
121.98.112.98	PTR	mhjc.school.nz
121.98.112.98	PTR	mhp.school.nz
121.98.112.98	PTR	mail.mhjc.school.nz
121.98.112.122	PTR	talklink.org.nz
121.98.112.122	PTR	mail.talklink.org.nz
121.98.112.122	A+PTR	smtp.talklink.org.nz
121.98.112.146	PTR	mail.jcs.co.nz
121.98.113.10	PTR	smtp.continuous.co.nz
121.98.113.22	A	mail.wine-searcher.co.nz
121.98.113.68	A	mediavault.co.nz
121.98.113.68	A	e-cast.co.nz
121.98.113.68	A	www.ecasttv.co.nz
121.98.113.198	PTR	nickel.xtractanetwork.com
121.98.113.214	PTR	smtp.highstreetit.co.nz
121.98.113.218	A	mail.odyssey.org.nz
121.98.114.65	PTR	default-rdns.vocus.co.nz
121.98.114.65	A	mail.serviceplus.com.au
121.98.114.65	A	mail.serviceplus.co.nz
121.98.114.67	A	sp-live.info
121.98.114.116	A	tuango.co.nz
121.98.114.116	A	njk.co.nz
121.98.114.130	PTR	default-rdns.vocus.co.nz
121.98.114.203	PTR	default-rdns.vocus.co.nz
121.98.114.241	A+PTR	mail.recycle.co.nz
121.98.114.242	PTR	default-rdns.vocus.co.nz
121.98.115.14	A	mail.kclaw.co.nz
121.98.115.54	A+PTR	mail3.lawlink.co.nz
121.98.116.2	PTR	default-rdns.vocus.co.nz
121.98.116.30	A+PTR	smtp2.nzstrong.co.nz
121.98.116.58	A	mx.spritesoftware.com
121.98.116.86	A+PTR	mail.teambmw.com
121.98.116.86	A	mail.teammcmillan.co.nz
121.98.116.86	A	shearwater.co.nz
121.98.116.132	A	smtp.lifelive.co.nz
121.98.116.226	PTR	mail1.vtfitzroy.co.nz
121.98.116.226	A	vtfitzroy.co.nz
121.98.116.226	A	mail1.babcocknz.co.nz
121.98.116.244	A+PTR	smtp.completesolutions.co.nz
121.98.117.34	PTR	default-rdns.callplus.co.nz
121.98.117.36	PTR	mail3.micromode.co.nz
121.98.117.36	A	cacigroup.co.nz
121.98.117.36	A	trilastin.co.nz
121.98.117.45	PTR	default-rdns.vocus.co.nz
121.98.117.49	A+PTR	mail.caci.co.nz
121.98.117.49	A	mail4.micromode.co.nz
121.98.117.67	A	wexnz.co.nz
121.98.117.67	A	mail.fal.co.nz
121.98.117.67	A	mail.wexnz.co.nz
121.98.117.86	A	vpn.kcorp.co.nz
121.98.117.88	PTR	default-rdns.vocus.co.nz
121.98.117.88	A	payroll.kidicorp.co.nz
121.98.117.195	PTR	mail.multichem.co.nz
121.98.117.209	PTR	smtp.concord.co.nz
121.98.117.254	A	mail.laydodd.co.nz
121.98.119.194	PTR	mail.sfo.govt.nz
121.98.119.194	A	smtp2.sfo.govt.nz
121.98.119.234	A	webtrackit.co.nz
121.98.120.4	PTR	default-rdns.vocus.co.nz
121.98.120.4	A	secomguardall.co.nz
121.98.120.4	A	guardall.co.nz
121.98.120.34	A	auckland.marstelterminals.com
121.98.120.58	A+PTR	smtp.nzchiro.co.nz
121.98.120.61	PTR	smtp.nzchiro.co.nz
121.98.120.61	A	mail.nzchiro.co.nz
121.98.120.74	A+PTR	smtp1.mckayshipping.co.nz
121.98.120.76	A+PTR	mail.mckayshipping.co.nz
121.98.120.78	A+PTR	www.mckayshipping.co.nz
121.98.120.78	A	iss-mckay.co.nz
121.98.120.114	A	smtp.uunz.ac.nz
121.98.120.123	PTR	default-rdns.vocus.co.nz
121.98.120.123	A	sealink.co.nz
121.98.120.125	PTR	srv-sea-hq-mail-00.sealink.co.nz
121.98.120.125	A	smtp.sealink.co.nz
121.98.120.138	A+PTR	mailserver.micromode.co.nz
121.98.120.138	A	mail.micromode.co.nz
121.98.120.138	A	mail.cacigroup.co.nz
121.98.120.139	A	medispa.co.nz
121.98.120.146	A	smtp.ashair.co.nz
121.98.120.210	PTR	default-rdns.vocus.co.nz
121.98.120.213	PTR	default-rdns.vocus.co.nz
121.98.120.225	A	mail.derceto.com
121.98.120.225	A	smtp.derceto.com
121.98.121.50	A+PTR	mail2.opdepot.co.nz
121.98.121.122	A	ns2.agtoal.net
121.98.121.157	A	www.cosco.co.nz
121.98.121.166	PTR	default-rdns.vocus.co.nz
121.98.121.169	A	mail.livemobile.co.nz
121.98.121.171	A	moments.org.nz
121.98.121.202	A	ns1.framework.org.nz
121.98.121.233	A+PTR	mail.deadlineexpress.co.nz
121.98.121.249	A	mail.canteen.org.nz
121.98.122.10	A	mail.thealexanders.co.nz
121.98.122.44	A+PTR	mail.jacal.co.nz
121.98.122.250	A	cbs.co.nz
121.98.123.14	PTR	default-rdns.vocus.co.nz
121.98.123.14	A	remote.catobolam.co.nz
121.98.123.33	A	smtp.hrc.govt.nz
121.98.123.38	PTR	mail.hrc.govt.nz
121.98.123.70	PTR	mail.activecomponents.com
121.98.123.106	PTR	mail.7group.co.nz
121.98.123.146	A+PTR	mail.designedbyinsight.com
121.98.123.146	A	mail.insightcreative.net
121.98.123.146	A	insightcreative.net
121.98.123.174	A	mail.canteen.org.nz
121.98.123.214	A	plus5.co.nz
121.98.123.214	A	mvfs.co.nz
121.98.123.214	A	appcom.co.nz
121.98.123.238	PTR	smtp.hrc.govt.nz
121.98.124.75	PTR	default-rdns.vocus.co.nz
121.98.125.221	A	zimnz.org