These entries are queried from radb.net using whois, you can try my project getting these.
:AS133903 route: 43.227.240.0/22 descr: PROXY ROUTE FOR NETDEPLOY origin: AS133903 mnt-by: MAINT-AS58513 changed: jimmy.hng [at] telin.sg 20150402 #16:05:22Z source: RADB last-modified: 2023-11-13T15:47:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.47.28.0/22 descr: PROXY ROUTE FOR NETDEPLOY origin: AS133903 mnt-by: MAINT-AS58513 changed: jimmy.hng [at] telin.sg 20150402 #16:06:30Z source: RADB last-modified: 2023-11-13T15:47:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source