Robtex

Up: 171.12.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 171.12.0.0/17
Down right: 171.12.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
171.12.0.70	A	jietetuozhan.com
171.12.1.78	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.1.124	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.1.248	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.2.16	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.2.21	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.2.126	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.3.71	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.3.122	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.4.18	A	hnatu.com
171.12.5.86	A	haeport.com
171.12.5.87	A	www.singlewindow.ha.cn
171.12.5.87	A	singlewindow.ha.cn
171.12.8.2	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.14.40	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.16.63	A	shirunfa.com
171.12.21.9	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.29.2	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.35.2	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.38.202	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.81.3	A	xn--whut05c.com
171.12.81.3	A	iyunpc.com
171.12.89.74	A	a136763976.oicp.net
171.12.90.242	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.93.23	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.94.57	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.119.248	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.119.249	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.140.153	A	duolun888.com
171.12.140.153	A	ln-rose.com
171.12.140.153	A	walsetech.com
171.12.144.64	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.154.162	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.155.225	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.158.169	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.159.227	A	hssy.linkpc.net
171.12.162.48	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.164.128	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.166.105	A	lhtianansys.com
171.12.171.232	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.174.230	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.181.51	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.183.131	A	quanzi.8866.org
171.12.189.82	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.190.108	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.191.109	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.191.143	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.191.185	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.192.97	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.192.196	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.193.7	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.193.14	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.193.102	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.194.84	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.194.117	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.195.158	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.196.253	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.201.181	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.206.192	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.218.57	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.220.119	A	sqhongya.com
171.12.222.76	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.246.233	PTR	12.171.broad.ha.dynamic.163data.com.cn