The netblock is routed by Fujitsu's AS2510 and the servers may be even managed by Fujitsu so I've tried to reach
fip-idcstaff@ml.jp.fujitsu.com and fip-idcstaff@dl.jp.fujitsu.com who are listed as the admin and tech contact for 202.248.100.0/24 but the tech contact email bounced. The second address didn't seem to bounce back but I am not convinced we're reaching the right company/group so I'm trying to find a clueful contact specifically from Canon in North America or even Europe to take a look help us find the right group to address the situation.