ARIN/Internet registries doesn’t maintain these records themselves, owners of IP netblocks do. Some registries have introduced mandatory abuse contact information (I think at least RIPE) and send a link to confirm the mailbox exists.
The hierarchy is: abuse contact of netblock. If ignored: abuse contact of AS. If ignored: Local internet registry (LIR) managing the AS. If ignored: Internet Registry like ARIN.
I see a possibility of automation here.
Also, report to DNSBL providers like Spamhaus. They rely on reports to blacklist single IPs, escalate to whole blocks and then the next larger subnet, until enough customers are affected.
The hierarchy is: abuse contact of netblock. If ignored: abuse contact of AS. If ignored: Local internet registry (LIR) managing the AS. If ignored: Internet Registry like ARIN.
I see a possibility of automation here.
Also, report to DNSBL providers like Spamhaus. They rely on reports to blacklist single IPs, escalate to whole blocks and then the next larger subnet, until enough customers are affected.