Robtex

Up: 131.203.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 131.203.32.0/20
Down right: 131.203.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
131.203.32.37	A	biodiscovery-5.incubator.comnet.net.nz
131.203.32.43	A	biodiscovery-11.incubator.comnet.net.nz
131.203.48.34	A+PTR	members.one.govt.nz
131.203.48.35	A	seemail.one.govt.nz
131.203.48.38	A	seemail31.one.govt.nz
131.203.48.66	A+PTR	smarts3.one.govt.nz
131.203.48.66	A	mx1.smarts3.one.govt.nz
131.203.48.71	A+PTR	mx114a.one.govt.nz
131.203.48.73	A	mx111a.one.govt.nz
131.203.63.2	A+PTR	mail.addington.co.nz
131.203.63.3	A	www.hof.co.nz
131.203.63.3	A	alpineretreat.net.nz
131.203.63.3	A	hof.co.nz
131.203.63.26	PTR	trinsys.co.nz
131.203.63.36	A	wordwave.co.nz
131.203.63.50	A	mail.researchfirst.co.nz
131.203.63.65	PTR	paragonmail.co.nz
131.203.63.65	A	mail.paragonmail.co.nz
131.203.63.66	PTR	paragoncomputers.co.nz
131.203.63.66	A	smtp.paragonpc.co.nz
131.203.63.66	A	mx1.paragoncomputers.co.nz
131.203.63.76	PTR	arista.co.nz
131.203.63.130	PTR	harcourts.co.nz
131.203.63.134	A+PTR	mail.apexrentals.com
131.203.63.138	A	smtp.formthotics.com
131.203.63.138	A	mail.expressorthotics.com
131.203.63.141	PTR	mail.researchfs.co.nz
131.203.63.141	A	thecalling.co.nz
131.203.63.187	A	hq.aranz.com
131.203.63.187	A	aml006.aranzmedical.com
131.203.63.198	A+PTR	mail.enatel.co.nz
131.203.63.198	A	postman.enatel.net
131.203.63.198	A	mail.enasolar.net
131.203.63.235	PTR	mail.deerace.co.nz
131.203.63.254	A	justattach-au.leapfrog3d.com