These entries are queried from radb.net using whois, you can try my project getting these.
:AS53283 route: 23.149.72.0/24 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-04-01T22:39:56Z last-modified: 2023-04-01T22:39:56Z source: ARIN rpki-ov-state: valid route: 23.149.73.0/24 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-04-01T22:40:31Z last-modified: 2023-04-01T22:40:31Z source: ARIN rpki-ov-state: valid route: 23.157.104.0/23 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-07-08T02:57:50Z last-modified: 2023-07-08T02:57:50Z source: ARIN rpki-ov-state: valid route: 23.157.104.0/24 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-08-23T00:36:49Z last-modified: 2023-08-23T00:36:49Z source: ARIN rpki-ov-state: valid route: 23.157.105.0/24 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-08-23T00:37:14Z last-modified: 2023-08-23T00:37:14Z source: ARIN rpki-ov-state: valid route: 38.105.3.0/24 descr: UNIFI Communications Inc origin: AS53283 mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20100910 #16:01:34Z source: RADB last-modified: 2023-11-13T15:41:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:470:1ae::/48 origin: AS53283 descr: NET-2001-470-1ae---48-AS53283 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2023-09-16T01:45:13Z last-modified: 2023-09-16T01:45:13Z rpki-ov-state: valid route6: 2607:33c0::/32 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-04-01T22:38:44Z last-modified: 2023-04-01T22:38:44Z source: ARIN rpki-ov-state: valid route6: 2607:33c0:c0::/48 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-06-22T12:48:17Z last-modified: 2023-06-22T12:48:17Z source: ARIN rpki-ov-state: valid route6: 2607:33c0:d0::/48 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-05-04T16:50:04Z last-modified: 2023-05-04T16:50:04Z source: ARIN rpki-ov-state: valid route6: 2607:33c0:f0::/48 origin: AS53283 descr: Litware LLC admin-c: ARINP46-ARIN tech-c: ARINP46-ARIN mnt-by: MNT-LL-952 created: 2023-05-04T16:49:08Z last-modified: 2023-05-04T16:49:08Z source: ARIN rpki-ov-state: valid