Did a search on google, looks like there is none other than abuse.net. Found a list of abuse email address for korea, hope this helps.
http://ip.nic.or.kr/english/notice.htmlSmall suggestion. Mabbe add links to the menu, on the following?
1) how to report spam
2) How to read the traceroute info....
3) Tracing tools etc. (eg.
http://combat.uxn.com/tracing.html )
This could be pointing to a link page on your site....easier for you to maintain and update.
Could you also look into decoding of obfuscated URLs ?
Thanx !!

'>