These entries are queried from radb.net using whois, you can try my project getting these.
:AS16977 route: 199.188.212.0/22 descr: Maintained for AS16977 origin: AS16977 mnt-by: MAINT-AS32703 changed: admin [at] indianafiber.net 20111117 #21:03:45Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source