These entries are queried from radb.net using whois, you can try my project getting these.
:AS12067 route: 64.27.224.0/20 origin: AS12067 descr: MNT-SHTC route 064.027.224.000/20 AS12067 admin-c: SYSTE426-ARIN tech-c: JB1300-ARIN tech-c: SYSTE426-ARIN mnt-by: MNT-SHTC created: 2020-09-01T19:58:22Z last-modified: 2022-10-27T18:13:54Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.27.224.0/21 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS12067 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: 64.27.232.0/21 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS12067 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: 216.240.64.0/19 origin: AS12067 descr: MNT-SHTC route 216.240.064.000/19 AS12067 admin-c: SYSTE426-ARIN tech-c: JB1300-ARIN tech-c: SYSTE426-ARIN mnt-by: MNT-SHTC created: 2020-09-01T19:56:56Z last-modified: 2022-10-27T18:13:54Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.240.64.0/20 origin: AS12067 descr: ShawneeLink Corporation mnt-by: MAINT-BLUEBIRD changed: daniel.johnston [at] bluebirdnetwork.com 20220208 #04:24:05Z source: RADB last-modified: 2023-11-13T16:09:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2606:1e00::/32 origin: AS12067 descr: MNT-SHTC route 2606:1E00:0000:0000:0000:0000:0000:0000/32 AS12067 admin-c: SYSTE426-ARIN tech-c: JB1300-ARIN tech-c: SYSTE426-ARIN mnt-by: MNT-SHTC created: 2020-10-02T13:41:42Z last-modified: 2022-10-27T18:13:54Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source