Robtex

Up: 59.188.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 59.188.41.0/25
Down right: 59.188.41.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
59.188.41.42	A	mail.hantec.com
59.188.41.43	PTR	mx1.hantec.com
59.188.41.43	A	mx1.ringus-solution.com
59.188.41.165	PTR	ptr059188041165.nws.com.hk
59.188.41.165	A	mx1.nwconstruction.com.hk
59.188.41.165	A	mx2.hipseng.com