Robtex

Up: 210.3.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 210.3.200.0/22
Down right: 210.3.204.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.3.206.38	PTR	mail.amplehk.com
210.3.206.38	PTR	mail.ampleconstruction.com.hk
210.3.206.38	A	ampleconstruction.com.hk
210.3.206.68	A+PTR	eastop.com
210.3.206.68	PTR	eastop.com.hk
210.3.206.87	A+PTR	www.wingshing.com
210.3.206.88	A+PTR	mail.wingshing.com
210.3.206.88	A	wingshing.com
210.3.206.89	PTR	mail.renxing.com.hk
210.3.206.89	A+PTR	renxing.com.hk
210.3.206.99	PTR	mail.bosswin.com
210.3.206.99	A	bosswin.com
210.3.206.100	A+PTR	www.bosswin.com