Robtex

Up: 49.50.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 49.50.220.0/23
Down right: 49.50.222.0/23

IP	Type	Hostname
49.50.221.3	PTR	3.host-49-50-221.euba.megatel.co.nz
49.50.221.4	PTR	4.host-49-50-221.euba.megatel.co.nz
49.50.221.5	PTR	5.host-49-50-221.euba.megatel.co.nz
49.50.221.6	PTR	6.host-49-50-221.euba.megatel.co.nz
49.50.221.8	PTR	8.host-49-50-221.euba.megatel.co.nz
49.50.221.11	PTR	11.host-49-50-221.euba.megatel.co.nz
49.50.221.12	PTR	12.host-49-50-221.euba.megatel.co.nz
49.50.221.21	PTR	21.host-49-50-221.euba.megatel.co.nz
49.50.221.36	PTR	36.host-49-50-221.euba.megatel.co.nz
49.50.221.42	PTR	42.host-49-50-221.euba.megatel.co.nz
49.50.221.44	PTR	44.host-49-50-221.euba.megatel.co.nz
49.50.221.49	PTR	49.host-49-50-221.euba.megatel.co.nz
49.50.221.76	PTR	76.host-49-50-221.euba.megatel.co.nz
49.50.221.87	PTR	87.host-49-50-221.euba.megatel.co.nz
49.50.221.96	PTR	96.host-49-50-221.euba.megatel.co.nz
49.50.221.106	PTR	106.host-49-50-221.euba.megatel.co.nz
49.50.221.111	PTR	111.host-49-50-221.euba.megatel.co.nz
49.50.221.114	PTR	114.host-49-50-221.euba.megatel.co.nz
49.50.221.122	PTR	122.host-49-50-192.euba.megatel.co.nz
49.50.221.145	PTR	145.host-49-50-221.euba.megatel.co.nz
49.50.221.156	PTR	156.host-49-50-221.euba.megatel.co.nz
49.50.221.157	PTR	157.host-49-50-221.euba.megatel.co.nz
49.50.221.168	PTR	168.host-49-50-221.euba.megatel.co.nz
49.50.221.174	PTR	174.host-49-50-221.euba.megatel.co.nz
49.50.221.178	PTR	178.host-49-50-221.euba.megatel.co.nz
49.50.221.183	PTR	183.host-49-50-221.euba.megatel.co.nz
49.50.221.207	PTR	207.host-49-50-221.euba.megatel.co.nz
49.50.221.209	PTR	209.host-49-50-221.euba.megatel.co.nz
49.50.221.215	PTR	215.host-49-50-221.euba.megatel.co.nz
49.50.221.229	PTR	229.host-49-50-221.euba.megatel.co.nz
49.50.221.247	PTR	247.host-49-50-221.euba.megatel.co.nz
49.50.223.255	PTR	255.host-49-50-223.euba.megatel.co.nz