These entries are queried from radb.net using whois, you can try my project getting these.
:AS59244 route: 103.253.244.0/22 descr: Proxy-registered route object origin: AS59244 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140305 source: RADB last-modified: 2023-11-13T15:46:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source