These entries are queried from radb.net using whois, you can try my project getting these.
:AS30533 route: 63.251.190.0/24 descr: PNAP-DEN boeing origin: AS30533 mnt-by: MAINT-AS1828 changed: jmontoya [at] internap.com 20040412 source: RADB last-modified: 2023-11-13T16:13:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.65.236.0/24 descr: PNAP-DEN origin: AS30533 mnt-by: MAINT-AS1828 changed: asanders [at] internap.com 20120711 source: RADB last-modified: 2023-11-13T16:14:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source