Robtex

Up: 221.5.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 221.5.64.0/22
Down right: 221.5.68.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
221.5.65.114	A	cbpk.cn
221.5.65.173	PTR	mail.ocular.com.cn
221.5.66.228	A	www.xuefo.net
221.5.66.229	A	mail.xuefo.com
221.5.66.229	A	big5.xuefo.net
221.5.66.229	A	putiwenhai.xuefo.net
221.5.67.12	A	mail.topdream.cn
221.5.67.12	A	topdream.cn
221.5.67.37	PTR	chungjye.com
221.5.67.37	A+PTR	m5.chungjye.com
221.5.67.37	A	m3.chungjye.com
221.5.67.58	A	xn--fiq611bevz9vq.com
221.5.71.49	A	iffsa-global.org
221.5.71.226	A	5515js.com