Robtex

Up: 103.21.172.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 103.21.172.0/24
Down right: 103.21.173.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.21.172.15	PTR	103-21-172-15.static.wirelessnation.net.nz
103.21.172.15	A	mail.ronnytm.com
103.21.172.15	A	smtp.ronnytm.com
103.21.172.31	PTR	103-21-172-31.static.wirelessnation.net.nz
103.21.172.38	PTR	103-21-172-38.static.wirelessnation.net.nz
103.21.172.38	A	lowinski.net
103.21.172.38	A	www.horoskope.de
103.21.172.39	A	nzhome.info
103.21.172.42	PTR	103-21-172-42.static.wirelessnation.net.nz
103.21.172.92	PTR	103-21-172-92.static.wirelessnation.net.nz
103.21.172.105	PTR	103-21-172-105.static.wirelessnation.net.nz
103.21.172.105	A	mail.htsgroup.co.nz
103.21.172.108	PTR	103-21-172-108.static.wirelessnation.net.nz
103.21.172.196	PTR	mail.christophertaylor.co.nz
103.21.172.211	PTR	103-21-172-211.static.wirelessnation.net.nz
103.21.172.211	A	nzpc.info
103.21.172.211	A	pcnz.info
103.21.173.66	A	taupaki.com
103.21.173.77	PTR	103-21-173-77.pool.wirelessnation.net.nz
103.21.173.130	PTR	mx.coherence.net.nz
103.21.173.130	A	mx.frankosolutions.com
103.21.173.130	A	mx.nzfarmsolutions.com
103.21.173.139	A	fomx.frankosolutions.co.nz
103.21.173.139	A	mx.coherence.net.nz
103.21.173.139	A	fomx.frankoroses.com
103.21.173.140	A	mail.sbi-productions.co.nz
103.21.173.140	A	raynesrd.sbi-productions.co.nz
103.21.173.187	PTR	103-21-173-187.pool.wirelessnation.net.nz
103.21.173.188	A	mail.runningwithscissors.co.nz
103.21.173.189	A	www.qpos.co.nz
103.21.173.189	A	gsale.co.nz
103.21.173.189	A	22txshop.com