How can I obtain the abuse e-mail address for IPs from Japan?

Hello, I'm having a hard time to figure out the abuse e-mail address for IPs from Japan. Any query I perform at the WHOIS, for any IP, from any autonomoyus system I get the same e-mail addresses: abuse@apnic.net hm-changed@apnic.net ip-apnic@nic.ad.jp hostmaster@nic.ad.jp These e-mail addresses belong to JPNIC, not the autonomous system itself. So any messages sent to these e-mail addresses will not reach the offending NOC/SOC so I can report vulnerabilities and DDoS attacks. What am I missing and how should I report security issues to autonomous systems from this region? Has anyone here any experience on this? Thanks in advance, Kurt Kraut