Robtex

Up: 211.157.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 211.157.12.0/23
Down right: 211.157.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.157.12.0	PTR	211.157.12.0.static.in-addr.arpa
211.157.12.50	PTR	211.157.12.50.static.in-addr.arpa
211.157.12.50	A	120ask.cn
211.157.12.66	A	amtium.com
211.157.12.66	A	www.amtium.com
211.157.12.197	PTR	211.157.12.197.static.in-addr.arpa
211.157.12.197	A	xn--b0tx7enyvvjav52au4ft3g.com
211.157.12.197	A	www.hqmianshou.com
211.157.12.200	PTR	211.157.12.200.static.in-addr.arpa
211.157.12.200	A	www.szpol.com
211.157.12.200	A	www.24eduol.com
211.157.12.204	PTR	211.157.12.204.static.in-addr.arpa
211.157.12.205	PTR	211.157.12.205.static.in-addr.arpa
211.157.12.208	A	edu24ol.biz
211.157.12.208	A	xn--8wv10xhh821b.com
211.157.12.208	A	xn--vhqq4tnzln3n9la454ckrcnxa.com
211.157.12.231	PTR	211.157.12.231.static.in-addr.arpa
211.157.12.234	PTR	211.157.12.234.static.in-addr.arpa
211.157.12.234	A	cdn.edu.edu24o1.com
211.157.12.234	A	www.edu24ol.com.wscdns.com
211.157.13.192	PTR	211.157.13.192.static.in-addr.arpa
211.157.14.69	PTR	211.157.14.69.static.in-addr.arpa
211.157.14.92	PTR	211.157.14.92.static.in-addr.arpa
211.157.15.37	PTR	211.157.15.37.static.in-addr.arpa
211.157.15.121	PTR	211.157.15.121.static.in-addr.arpa
211.157.15.179	PTR	211.157.15.179.static.in-addr.arpa
211.157.15.179	A	mtonet.com
211.157.15.179	A	www.mtonet.com
211.157.15.188	PTR	211.157.15.188.static.in-addr.arpa
211.157.15.188	A	cdnns4.cnlink.net
211.157.15.189	A+PTR	dns1.apcix.com.cn
211.157.15.189	A	dns2.chinaidns.com
211.157.15.251	PTR	211.157.15.251.static.in-addr.arpa
211.157.15.251	A	mail.chinaidns.com
211.157.15.253	A+PTR	email.cn.cnlink.net
211.157.15.253	PTR	mail.cn.cnlink.net
211.157.15.255	PTR	211.157.15.255.static.in-addr.arpa