Robtex

Up: 121.99.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 121.99.32.0/20
Down right: 121.99.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.99.32.28	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.32.74	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.32.133	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.33.51	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.33.186	A	121-99-33-186.bng1.nct.orcon.net.nz
121.99.33.220	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.33.220	A	dialadisc.co.nz
121.99.34.115	PTR	121-99-34-115.bng1.nct.orcon.net.nz
121.99.34.197	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.35.2	A+PTR	121-99-35-2.bng1.nct.orcon.net.nz
121.99.35.66	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.35.143	A	121-99-35-143.bng1.nct.orcon.net.nz
121.99.36.2	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.36.2	A	copacetic.co.nz
121.99.36.2	A	remote.copacetic.co.nz
121.99.36.72	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.36.94	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.36.169	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.37.2	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.37.6	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.37.6	A	engmark.name
121.99.37.201	A	121-99-37-201.bng1.nct.orcon.net.nz
121.99.38.17	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.38.20	A	121-99-38-20.bng1.nct.orcon.net.nz
121.99.38.36	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.38.224	A	121-99-38-224.bng1.nct.orcon.net.nz
121.99.39.38	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.39.99	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.39.133	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.39.158	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.39.158	A	mail.historynottaughtatschool.com
121.99.39.158	A	historynottaughtatschool.com
121.99.39.243	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.39.250	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.40.37	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.40.72	A	121-99-40-72.bng1.nct.orcon.net.nz
121.99.40.119	A	121-99-40-119.bng1.nct.orcon.net.nz
121.99.40.178	A	ambledown.co.nz
121.99.41.57	A	121-99-41-57.bng1.nct.orcon.net.nz
121.99.41.133	A	*.275a.com
121.99.41.133	A	www.275a.com
121.99.41.151	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.42.0	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.42.2	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.42.3	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.42.131	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.42.162	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.42.163	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.42.226	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.43.51	A	softime.co.nz
121.99.43.128	A	121-99-43-128.bng1.nct.orcon.net.nz
121.99.43.134	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.44.90	A+PTR	121-99-44-90.bng1.nct.orcon.net.nz
121.99.45.150	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.46.162	A	121-99-46-162.bng1.nct.orcon.net.nz
121.99.46.219	A	121-99-46-219.bng1.nct.orcon.net.nz
121.99.46.236	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.47.3	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.47.3	A	121-99-47-3.bng1.nct.orcon.net.nz
121.99.47.54	A	jameswoods.co.nz
121.99.47.54	A	openhomegallery.com
121.99.47.70	PTR	dynamic-cpe-pool.orcon.net.nz
121.99.49.20	A	121-99-49-20.bng1.tvc.orcon.net.nz
121.99.50.42	PTR	default-rdns.vocus.co.nz
121.99.50.89	A	objective.co.nz
121.99.51.35	A	121-99-51-35.bng1.tvc.orcon.net.nz
121.99.51.76	PTR	default-rdns.vocus.co.nz
121.99.51.76	A	canocraft.net
121.99.51.157	PTR	default-rdns.vocus.co.nz
121.99.51.173	A	121-99-51-173.bng1.tvc.orcon.net.nz
121.99.52.93	A+PTR	121-99-52-93.bng1.tvc.orcon.net.nz
121.99.53.216	A	121-99-53-216.bng1.tvc.orcon.net.nz
121.99.54.227	A	121-99-54-227.bng1.tvc.orcon.net.nz
121.99.55.129	PTR	default-rdns.vocus.co.nz
121.99.55.140	A	121-99-55-140.bng1.tvc.orcon.net.nz
121.99.55.151	A	121-99-55-151.bng1.tvc.orcon.net.nz
121.99.55.155	A	121-99-55-155.bng1.tvc.orcon.net.nz
121.99.56.219	A	mail.grahammoses.com
121.99.57.41	PTR	default-rdns.vocus.co.nz
121.99.57.41	A	121-99-57-41.bng1.tvc.orcon.net.nz
121.99.57.71	A	121-99-57-71.bng1.tvc.orcon.net.nz
121.99.58.22	A	121-99-58-22.bng1.tvc.orcon.net.nz
121.99.59.52	A	121-99-59-52.bng1.tvc.orcon.net.nz
121.99.59.204	A	webest.co.nz
121.99.59.218	A	121-99-59-218.bng1.tvc.orcon.net.nz
121.99.60.18	PTR	default-rdns.callplus.co.nz
121.99.60.18	A	121-99-60-18.bng1.tvc.orcon.net.nz
121.99.60.40	A	121-99-60-40.bng1.tvc.orcon.net.nz
121.99.60.105	A	121-99-60-105.bng1.tvc.orcon.net.nz
121.99.60.162	PTR	default-rdns.vocus.co.nz
121.99.60.164	A	121-99-60-164.bng1.tvc.orcon.net.nz
121.99.62.77	PTR	default-rdns.vocus.co.nz
121.99.62.77	A	vsolutions.synology.me
121.99.63.10	A	121-99-63-10.bng1.tvc.orcon.net.nz
121.99.63.100	A	121-99-63-100.bng1.tvc.orcon.net.nz
121.99.63.253	A+PTR	121-99-63-253.bng1.tvc.orcon.net.nz