These entries are queried from radb.net using whois, you can try my project getting these.
:AS399628 route: 64.94.153.0/24 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:24:21Z last-modified: 2023-09-24T17:24:21Z source: ARIN rpki-ov-state: valid route: 64.94.156.0/24 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:25:18Z last-modified: 2023-09-24T17:25:18Z source: ARIN rpki-ov-state: valid route: 64.94.159.0/24 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:25:52Z last-modified: 2023-09-24T17:25:52Z source: ARIN rpki-ov-state: valid route: 64.95.9.0/24 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:26:31Z last-modified: 2023-09-24T17:26:31Z source: ARIN rpki-ov-state: valid route: 64.95.14.0/24 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:27:13Z last-modified: 2023-09-24T17:27:13Z source: ARIN rpki-ov-state: valid route: 209.188.108.0/24 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA remarks: This object was automatically created during a customer ROA generation created: 2023-08-09T20:23:24Z last-modified: 2023-08-09T20:23:24Z source: ARIN rpki-ov-state: valid route: 209.237.154.0/24 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2021-05-07T03:08:34Z last-modified: 2021-05-07T04:59:02Z source: ARIN rpki-ov-state: valid route6: 2001:470:18f::/48 origin: AS399628 descr: NET-2001-470-18f---48-AS399628 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2023-08-21T01:45:13Z last-modified: 2023-08-21T01:45:13Z rpki-ov-state: valid route6: 2620:96:a000::/44 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2022-11-02T19:21:04Z last-modified: 2022-11-02T19:21:04Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:96:a000::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:29:13Z last-modified: 2023-09-24T17:29:13Z source: ARIN rpki-ov-state: valid route6: 2620:96:a001::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA remarks: This object was automatically created during a customer ROA generation created: 2023-08-09T20:23:24Z last-modified: 2023-08-09T20:23:24Z source: ARIN rpki-ov-state: valid route6: 2620:96:a002::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:32:02Z last-modified: 2023-09-24T17:32:02Z source: ARIN rpki-ov-state: valid route6: 2620:96:a003::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:33:03Z last-modified: 2023-09-24T17:33:03Z source: ARIN rpki-ov-state: valid route6: 2620:96:a004::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:34:35Z last-modified: 2023-09-24T17:34:35Z source: ARIN rpki-ov-state: valid route6: 2620:96:a005::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:34:41Z last-modified: 2023-09-24T17:34:41Z source: ARIN rpki-ov-state: valid route6: 2620:96:a006::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:34:45Z last-modified: 2023-09-24T17:34:45Z source: ARIN rpki-ov-state: valid route6: 2620:96:a007::/48 origin: AS399628 descr: Internet Measurement Research admin-c: IMRNO-ARIN tech-c: IMRNO-ARIN mnt-by: MNT-SIXMA created: 2023-09-24T17:34:49Z last-modified: 2023-09-24T17:34:49Z source: ARIN rpki-ov-state: valid