These entries are queried from radb.net using whois, you can try my project getting these.
:AS63083 route: 172.99.176.0/23 origin: AS63083 descr: ARIN Allocation admin-c: RINGL34-ARIN tech-c: NOC2367-ARIN mnt-by: MNT-CLD-18 created: 2022-04-28T12:12:09Z last-modified: 2022-04-28T12:12:09Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 172.99.176.0/23 origin: AS63083 descr: Proxy Registered on Behalf of AS63083 mnt-by: MAINT-AS30517 changed: jbuller [at] everstream.net 20220426 #02:45:18Z source: RADB last-modified: 2023-11-13T16:10:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source