Robtex

Up: 171.12.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 171.12.0.0/18
Down right: 171.12.64.0/18

IP	Type	Hostname
171.12.0.70	A	jietetuozhan.com
171.12.0.145	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.0.158	PTR	12.171.broad.ha.dynamic.163data.com.cn
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
171.12.3.146	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.3.159	PTR	12.171.broad.ha.dynamic.163data.com.cn
171.12.3.162	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