Robtex

Up: 121.98.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 121.98.0.0/20
Down right: 121.98.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.98.0.0	PTR	default-rdns.callplus.co.nz
121.98.0.1	A+PTR	dns1.orcon.net.nz
121.98.0.2	PTR	dns2.orcon.net.nz
121.98.0.7	PTR	default-rdns.vocus.co.nz
121.98.0.45	PTR	default-rdns.vocus.co.nz
121.98.0.53	PTR	default-rdns.vocus.co.nz
121.98.0.55	PTR	default-rdns.vocus.co.nz
121.98.0.61	PTR	default-rdns.vocus.co.nz
121.98.0.64	PTR	default-rdns.vocus.co.nz
121.98.1.7	PTR	default-rdns.vocus.co.nz
121.98.3.2	PTR	default-rdns.callplus.co.nz
121.98.9.13	A	xe-1-0-0.cre1.nct.orcon.net.nz
121.98.9.34	PTR	ge-1-3-0-0.bdr1.nct.orcon.net.nz
121.98.9.45	A	ge-0-1-6-0.cre1.nct.orcon.net.nz
121.98.9.169	PTR	xe-3-1-0-235.cre1.sky.orcon.net.nz
121.98.9.170	A+PTR	xe-1-1-0-235.cre1.nct.orcon.net.nz
121.98.9.173	A	xe-3-1-0-236.cre1.sky.orcon.net.nz
121.98.9.174	A	xe-1-1-0-236.cre2.nct.orcon.net.nz
121.98.12.20	PTR	cre2.nct.odyssey.net.nz
121.98.18.2	PTR	default-rdns.vocus.co.nz
121.98.19.2	PTR	default-rdns.vocus.co.nz
121.98.21.236	PTR	default-rdns.vocus.co.nz
121.98.21.236	A	certainlyawesome.com
121.98.24.90	PTR	default-rdns.callplus.co.nz
121.98.26.32	PTR	default-rdns.vocus.co.nz
121.98.26.192	PTR	default-rdns.vocus.co.nz
121.98.28.2	PTR	default-rdns.callplus.co.nz
121.98.29.25	PTR	default-rdns.vocus.co.nz
121.98.29.25	A	gnucomp.mine.nu
121.98.29.25	A	aussie.mine.nu
121.98.29.55	PTR	default-rdns.callplus.co.nz
121.98.29.55	A	phatputer.ddns.net
121.98.30.228	PTR	default-rdns.vocus.co.nz
121.98.30.229	PTR	default-rdns.vocus.co.nz
121.98.30.229	A	kjweatherall.com
121.98.31.53	PTR	default-rdns.vocus.co.nz
121.98.31.53	A	firewall.data.net.nz
121.98.31.53	A	plutonium.myqnapcloud.com
121.98.31.54	PTR	default-rdns.vocus.co.nz