Robtex

Up: 220.228.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 220.228.240.0/22
Down right: 220.228.244.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.228.241.190	PTR	nat190.doubleservice.com
220.228.241.190	A	ns1.doubleservice.com.tw
220.228.241.233	PTR	adsl-220-228-241-233.nh.sparqnet.net
220.228.242.7	A+PTR	mail.e-usi.com
220.228.242.7	A	championvc.com.tw
220.228.242.7	A	www.e-usi.com
220.228.242.228	A	pglc.tw
220.228.242.228	A	www.pglc.tw
220.228.243.99	A	server1.donlon.com.tw
220.228.243.244	A+PTR	purin.2y.cc
220.228.243.244	A	dns.2y.cc
220.228.243.244	A	purin.2y.idv.tw
220.228.244.76	A+PTR	msdsc.ealpha.com.tw
220.228.244.76	A	ms.ealpha.com.tw
220.228.244.76	A	h3.ealpha.com.tw
220.228.244.169	PTR	adsl-220-228-244-169.bc.sparqnet.net
220.228.244.169	A	mail.webavd.com
220.228.244.251	PTR	elit.com.tw
220.228.247.125	A	william-web.com.tw