These entries are queried from radb.net using whois, you can try my project getting these.
:AS40523 route: 64.18.240.0/20 descr: OACYS origin: AS40523 mnt-by: MAINT-AS54048 changed: msouders [at] cvin.com 20150612 #18:05:08Z source: RADB last-modified: 2023-11-13T15:47:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 172.83.224.0/20 descr: Oacys-2 origin: AS40523 mnt-by: MAINT-AS54048 changed: msouders [at] cvin.com 20180117 #17:13:55Z source: RADB last-modified: 2023-11-13T15:53:03Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.19.48.0/20 descr: Oacys origin: AS40523 mnt-by: MAINT-AS54048 changed: msouders [at] cvin.com 20160408 #18:09:20Z source: RADB last-modified: 2023-11-13T15:49:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:470:1c5::/48 origin: AS40523 descr: NET-2001-470-1c5---48-AS40523 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2023-10-23T01:45:13Z last-modified: 2023-10-23T01:45:13Z rpki-ov-state: valid route6: 2604:d00::/32 origin: AS40523 descr: OACYS mnt-by: MAINT-AS19754 changed: erich [at] gotfusion.net 20200429 #20:26:13Z source: RADB last-modified: 2023-11-13T16:00:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source