Robtex

Up: 203.226.254.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.226.255.0/25
Down right: 203.226.255.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.226.255.7	A	adimg.nate.com
203.226.255.8	A	adimg.nateimg.co.kr
203.226.255.9	A	cyad.nate.com
203.226.255.11	A	cyad1.nate.com
203.226.255.16	A	antiskcommunications.com
203.226.255.16	A	antiskcommunications.net
203.226.255.18	A	sms.nate.com
203.226.255.20	A	zul.im
203.226.255.24	PTR	gwmail1.nate.com
203.226.255.25	A	adreport.nate.com
203.226.255.27	A	www.natecorp.com
203.226.255.27	A	www.skcomms.co.kr
203.226.255.27	A	skcommunications.net
203.226.255.30	PTR	gwmail2.nate.com
203.226.255.31	A	adguide.nate.com
203.226.255.31	A	business.nate.com
203.226.255.33	PTR	gwmail3.nate.com
203.226.255.40	A	sbm.nate.com
203.226.255.61	PTR	smtp.nate.com
203.226.255.131	A	club.nate.com