These entries are queried from radb.net using whois, you can try my project getting these.
:AS63519 route: 103.239.104.0/23 descr: proxy reg for Silicon Systems by Telecom NZ origin: AS63519 mnt-by: MAINT-AS4648 changed: AS4648 [at] netgate.net.nz 20140812 #21:16:10Z source: RADB last-modified: 2023-11-13T15:46:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.239.104.0/24 descr: proxy reg for Silicon Systems by Telecom NZ origin: AS63519 mnt-by: MAINT-AS4648 changed: AS4648 [at] netgate.net.nz 20140812 #21:16:51Z source: RADB last-modified: 2023-11-13T15:46:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source