These entries are queried from radb.net using whois, you can try my project getting these.
:AS53460 route: 146.88.216.0/21 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS53460 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 146.88.216.0/21 origin: AS53460 descr: Mon-Cre Telephone 227 Main Street Ramer AL 36069 United States + NOC: 256.428.8788 member-of: AS53460:RS-MONCRE-CUSTOMERS remarks: Mon-Cre Telephone 227 Main Street Ramer AL 36069 United States + NOC: 256.428.8788 admin-c: DEESE-ARIN tech-c: IPADM504-ARIN mnt-by: MNT-MTCC-1 created: 2022-09-20T21:02:17Z last-modified: 2022-09-20T21:02:17Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 158.120.112.0/21 origin: AS53460 descr: Mon-Cre Telephone 227 Main Street Ramer AL 36069 United States + NOC: 256.428.8788 member-of: AS53460:RS-MONCRE-CUSTOMERS remarks: Mon-Cre Telephone 227 Main Street Ramer AL 36069 United States + NOC: 256.428.8788 admin-c: DEESE-ARIN tech-c: IPADM504-ARIN mnt-by: MNT-MTCC-1 created: 2022-09-20T20:14:16Z last-modified: 2022-09-20T20:14:16Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 162.213.240.0/21 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS53460 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 162.213.240.0/21 origin: AS53460 descr: Mon-Cre Telephone 227 Main Street Ramer AL 36069 United States + NOC: 256.428.8788 member-of: AS53460:RS-MONCRE-CUSTOMERS remarks: Mon-Cre Telephone 227 Main Street Ramer AL 36069 United States + NOC: 256.428.8788 admin-c: DEESE-ARIN tech-c: IPADM504-ARIN mnt-by: MNT-MTCC-1 created: 2022-09-20T21:01:15Z last-modified: 2022-09-20T21:01:15Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source