These entries are queried from radb.net using whois, you can try my project getting these.
:AS396303 route6: 2406:4440:50::/44 origin: AS396303 descr: AperNet HK mnt-by: MNT-APERNET changed: hozeng [at] apernet.io 20211202 source: ALTDB rpki-ov-state: valid route6: 2406:4440:60::/44 origin: AS396303 descr: AperNet HK mnt-by: MNT-APERNET changed: hozeng [at] apernet.io 20211202 source: ALTDB rpki-ov-state: valid route6: 2406:4440:70::/44 origin: AS396303 descr: AperNet HK mnt-by: MNT-APERNET changed: hozeng [at] apernet.io 20211202 source: ALTDB rpki-ov-state: valid route6: 2602:feda::/36 descr: Nato Laboratory origin: AS396303 notify: nat [at] nat.moe mnt-by: MNT-NRL-25 changed: nat [at] nat.moe 20170609 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:2::/48 descr: Nato Legacy origin: AS396303 notify: nat [at] nat.moe mnt-by: MNT-NRL-25 changed: nat [at] nat.moe 20200505 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:a1::/48 descr: Nato Research Ltd. origin: AS396303 notify: nat [at] nat.moe mnt-by: MNT-NRL-25 changed: nat [at] nat.moe 20180614 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:a6::/48 descr: Nato Laboratory RU origin: AS396303 mnt-by: MNT-NRL-25 changed: noc [at] nat.moe 20170801 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:e000::/36 origin: AS396303 descr: 720 University Ave PO Box 35765 Syracuse NY 13235 United States admin-c: ZENGH-ARIN tech-c: NLN2-ARIN mnt-by: MNT-NRL-25 created: 2021-12-01T02:03:28Z last-modified: 2021-12-01T02:03:28Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:f0d0::/44 origin: AS396303 descr: AperNet SG mnt-by: MNT-APERNET changed: hozeng [at] apernet.io 20211112 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:f0e0::/44 origin: AS396303 descr: AperNet SG mnt-by: MNT-APERNET changed: hozeng [at] apernet.io 20211026 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:f0f0::/44 origin: AS396303 descr: AperNet SG mnt-by: MNT-APERNET changed: hozeng [at] apernet.io 20211026 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:feda:f400::/40 origin: AS396303 descr: 720 University Ave PO Box 35765 Syracuse NY 13235 United States admin-c: ZENGH-ARIN tech-c: NLN2-ARIN mnt-by: MNT-NRL-25 created: 2022-08-24T06:45:40Z last-modified: 2022-08-24T06:45:40Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source