Robtex

Up: 125.236.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 125.236.41.0/25
Down right: 125.236.41.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
125.236.41.138	PTR	mx10.managedmail.co.nz
125.236.41.138	A	smtp.macro.co.nz
125.236.41.138	A	smtp.woods.co.nz
125.236.41.139	PTR	smtp.safecom.net.nz
125.236.41.139	A	smtp.answer.co.nz
125.236.41.139	A	smtp.stv.govt.nz