Robtex

Up: 211.162.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 211.162.72.0/23
Down right: 211.162.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.162.72.0	PTR	server.szgwbn.net
211.162.72.18	PTR	smtp3.kingdee.com
211.162.72.23	PTR	servers.szgwbn.net
211.162.72.51	PTR	szex01.zenitron.com.tw
211.162.72.57	A	gffitness.cn
211.162.72.57	A	mail.gffitness.cn
211.162.72.65	PTR	mail.3glasses.cn
211.162.72.65	A	32817796.com
211.162.72.73	A	mail.tillcn.net
211.162.72.88	PTR	servers.szgwbn.net
211.162.72.89	A	live.borqs.com
211.162.72.131	PTR	email.nikoyo.com.cn
211.162.72.131	PTR	m.nikoyo.com.cn
211.162.72.138	PTR	servers.szgwbn.net
211.162.72.138	A	ns2.nikoyo.com
211.162.72.156	PTR	servers.szgwbn.net
211.162.72.193	PTR	servers.szgwbn.net
211.162.72.193	A	hysenka.com
211.162.72.193	A	senka.com.cn
211.162.72.198	PTR	servers.szgwbn.net
211.162.72.209	PTR	servers.szgwbn.net
211.162.72.209	A	jsypcb.com
211.162.72.229	A+PTR	mail.chlosio.com
211.162.72.229	A	chlosio.com
211.162.73.0	PTR	server.szgwbn.net
211.162.73.29	PTR	mail.felogisticssz.com
211.162.73.36	PTR	mail.gosunchina.com
211.162.73.37	PTR	servers.szgwbn.net
211.162.73.37	A	gosunchina.com
211.162.73.37	A	zyqq.net
211.162.73.49	A	mail.ecoolbuy.com
211.162.73.61	PTR	servers.szgwbn.net
211.162.73.69	PTR	servers.szgwbn.net
211.162.73.73	PTR	googoltech.com
211.162.73.73	PTR	mail.googoltech.com
211.162.73.73	PTR	oa.googoltech.com
211.162.73.89	A	mail.jianshuo.com
211.162.73.89	A	www.jianshuo.com
211.162.73.89	A	*.jianshuo.com
211.162.73.91	PTR	servers.szgwbn.net
211.162.73.113	PTR	servers.szgwbn.net
211.162.73.139	PTR	servers.szgwbn.net
211.162.73.173	PTR	servers.szgwbn.net
211.162.73.176	PTR	e-mail.hirosawa.com.cn
211.162.73.193	A	huaone.com
211.162.73.193	A	feiya520.com
211.162.73.193	A	www.huaone.com
211.162.73.201	A	dituolong.com
211.162.73.202	PTR	servers.szgwbn.net
211.162.73.202	A	ffshz.com
211.162.73.209	A+PTR	inda.com.cn
211.162.73.209	A+PTR	mail.inda.com.cn
211.162.73.209	A	www.inda.com.cn
211.162.73.231	PTR	servers.szgwbn.net
211.162.73.234	PTR	servers.szgwbn.net
211.162.73.235	PTR	servers.szgwbn.net
211.162.73.237	A	xn--fiqw03l8hc.net
211.162.73.237	A	mail.szccb.net
211.162.73.243	A+PTR	mail.gdtechnologies.com
211.162.73.245	PTR	mail.ci-dg.com
211.162.73.249	PTR	mail.avocetdg.com
211.162.74.0	PTR	server.szgwbn.net
211.162.74.26	PTR	servers.szgwbn.net
211.162.74.26	A	rrl.cn
211.162.74.44	PTR	servers.szgwbn.net
211.162.74.54	PTR	servers.szgwbn.net
211.162.74.112	PTR	servers.szgwbn.net
211.162.74.199	PTR	servers.szgwbn.net
211.162.74.217	PTR	servers.szgwbn.net
211.162.74.235	PTR	mail2.wyn88.com
211.162.75.0	PTR	server.szgwbn.net
211.162.75.21	PTR	servers.szgwbn.net
211.162.75.29	PTR	servers.szgwbn.net
211.162.75.44	PTR	servers.szgwbn.net
211.162.75.141	A	17gimefi.com
211.162.75.179	A	hanyou1915.com
211.162.75.209	PTR	servers.szgwbn.net
211.162.75.248	PTR	servers.szgwbn.net
211.162.75.253	A+PTR	dhsz.com.cn
211.162.75.253	A	ns2.dhsz.com.cn