These entries are queried from radb.net using whois, you can try my project getting these.
:AS397753 route: 23.139.240.0/24 descr: Wander IPv4s from ARIN origin: AS397753 mnt-by: MAINT-AS397753 changed: dan [at] wander.me 20191121 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.135.96.0/24 descr: EastCreek origin: AS397753 mnt-by: MAINT-AS19151 changed: ipadmin [at] bboi.net 20230607 source: BBOI rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.135.96.0/24 origin: AS397753 descr: East Creek Networks admin-c: ADMIN8219-ARIN tech-c: ROUTI43-ARIN tech-c: TECHN1837-ARIN mnt-by: MNT-ECNL-2 created: 2023-04-07T01:25:02Z last-modified: 2023-04-07T01:25:02Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:5840::/32 descr: Wander IPv6s from ARIN origin: AS397753 mnt-by: MAINT-AS397753 changed: dan [at] wander.me 20191121 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source