These entries are queried from radb.net using whois, you can try my project getting these.
:AS400298 route: 172.99.249.0/24 origin: AS400298 descr: Customer prefix mnt-by: MAINT-AS20278 changed: spinder [at] nexeon.com 20211213 #23:16:41Z source: RADB last-modified: 2023-11-13T16:09:03Z rpki-ov-state: valid route: 172.99.249.0/24 origin: AS400298 descr: 603 discovery drive West Chicago IL 60185 United States admin-c: WARRE428-ARIN tech-c: WARRE428-ARIN mnt-by: MNT-ML-1415 created: 2021-12-13T18:06:05Z last-modified: 2022-05-04T14:15:16Z source: ARIN rpki-ov-state: valid route: 192.209.63.0/24 origin: AS400298 descr: Route for AS400298 admin-c: ZHAD1-ARIN tech-c: ZHAD1-ARIN mnt-by: MNT-ZHL-3 created: 2023-06-01T20:41:10Z last-modified: 2023-06-01T20:41:10Z source: ARIN rpki-ov-state: valid route6: 2602:fed2:7189::/48 descr: Free Range Cloud Customer Subnet origin: AS400298 tech-c: SUPPO2030-ARIN admin-c: SUPPO2030-ARIN mnt-by: MNT-FRCH-1 source: ARIN created: 2022-12-12T01:55:02Z last-modified: 2022-12-12T01:55:02Z rpki-ov-state: valid route6: 2602:fed2:730e::/48 origin: AS400298 descr: Customer prefix mnt-by: MAINT-AS20278 changed: spinder [at] nexeon.com 20221025 #22:34:35Z source: RADB last-modified: 2023-11-13T16:12:47Z rpki-ov-state: valid route6: 2602:fed2:730e::/48 descr: Free Range Cloud Customer Subnet origin: AS400298 tech-c: SUPPO2030-ARIN admin-c: SUPPO2030-ARIN mnt-by: MNT-FRCH-1 source: ARIN created: 2023-06-26T23:40:02Z last-modified: 2023-06-26T23:40:02Z rpki-ov-state: valid route6: 2602:fed2:7317::/48 origin: AS400298 descr: Customer prefix. mnt-by: MAINT-AS20278 changed: spinder [at] nexeon.com 20230217 #16:42:10Z source: RADB last-modified: 2023-11-13T16:15:00Z rpki-ov-state: valid route6: 2602:fed2:7317::/48 descr: Free Range Cloud Customer Subnet origin: AS400298 tech-c: SUPPO2030-ARIN admin-c: SUPPO2030-ARIN mnt-by: MNT-FRCH-1 source: ARIN created: 2023-06-26T23:40:03Z last-modified: 2023-06-26T23:40:03Z rpki-ov-state: valid