Robtex

Up: 221.181.64.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 221.181.66.0/24
Down right: 221.181.67.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
221.181.66.15	PTR
221.181.66.15	A	mail.xlpvc.com
221.181.66.15	A	*.furchina.com
221.181.66.23	A	www.wsjx.net
221.181.66.50	PTR
221.181.66.60	PTR
221.181.66.60	A	25.vogins.com
221.181.66.60	A	s262653429.onlinehome.us
221.181.66.71	PTR
221.181.66.71	A	wsjx.net
221.181.66.76	PTR
221.181.66.76	A	www.91vxp.com
221.181.66.100	PTR	yundong78.cin
221.181.66.130	A	biecuoguo.com
221.181.66.133	PTR
221.181.66.139	PTR
221.181.66.142	PTR
221.181.66.143	A	asianaerospace.com.cn
221.181.66.143	A	100design.cn
221.181.66.156	PTR
221.181.66.156	A	admin.waptx.com
221.181.66.184	PTR
221.181.66.184	A	yngftj.com
221.181.66.212	A	haotingmp3.net
221.181.66.212	A	www.haotingmp3.net
221.181.66.213	PTR
221.181.66.213	A	nieberding.net
221.181.66.213	A	baidump3.org
221.181.66.215	A	17tmp3.com
221.181.66.216	PTR
221.181.66.216	A	tiantmp3.com
221.181.66.216	A	mp3zhangmen.com
221.181.67.62	PTR
221.181.67.137	PTR
221.181.67.137	A	mayrong.com
221.181.67.137	A	makerslist.com
221.181.67.144	PTR
221.181.67.144	A	webcatdot.dianping.com
221.181.67.149	PTR
221.181.67.149	A	7csw.com
221.181.67.154	PTR
221.181.67.154	A	mail.wyjt.cn
221.181.67.157	PTR
221.181.67.157	A	shangpinma.com
221.181.67.158	PTR
221.181.67.160	A	xn--fiqs8snz0dcsa.com
221.181.67.160	A	nongxie.com
221.181.67.161	A	tcmjob.com
221.181.67.161	A	taoshi.cn
221.181.67.163	PTR
221.181.67.163	A	cheguanjia.net
221.181.67.164	PTR
221.181.67.166	PTR
221.181.67.166	A	chinaholidaytravel.com
221.181.67.166	A	mail.chinaholidaytravel.com
221.181.67.169	PTR
221.181.67.169	A	www.pyrolead.com
221.181.67.169	A	ruiyingsh.com
221.181.67.176	PTR
221.181.67.250	PTR
221.181.67.250	A	dns2.meitesibangweionline.com
221.181.67.250	A	dns1.meitesibangweionline.com