Robtex

Up: 113.28.252.0/22
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Down left: 113.28.252.0/24
Down right: 113.28.253.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
113.28.253.80	PTR	barracuda.luksbn.com.hk
113.28.253.80	PTR	mail.luksbrobutton.com.hk
113.28.253.80	PTR	mail.djind.com.hk
113.28.253.97	PTR	mail.bluemountainhk.com
113.28.253.97	A	mail.topgrowthltd.com
113.28.253.97	A	mx1.cnbdltd.com