Robtex

Up: 116.6.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 116.6.72.0/23
Down right: 116.6.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
116.6.72.2	A	eurostarchina.com
116.6.72.19	A+PTR	hapg-hitachi.com.cn
116.6.72.19	PTR	hcpg-hitachi.com.cn
116.6.72.19	A+PTR	hitachi-hacs.com.cn
116.6.72.40	A	mail.risungroup.com
116.6.74.34	A+PTR	atlantictool.cn
116.6.74.50	A	mail.franklingz.com