These entries are queried from radb.net using whois, you can try my project getting these.
:AS133959 route: 103.50.14.0/23 descr: Owentis Singapore origin: AS133959 mnt-by: MAINT-OWENTIS-AP last-modified: 2015-03-18T10:13:47Z source: APNIC rpki-ov-state: valid route: 103.101.238.0/24 origin: AS133959 descr: INSEAD 1 Ayer Rajah Avenue, Singapore 138676 mnt-by: MAINT-INSEAD1-SG last-modified: 2017-11-24T03:07:10Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:470:14f::/48 origin: AS133959 descr: NET-2001-470-14f---48-AS133959 admin-c: ZH17-ARIN tech-c: ZH17-ARIN mnt-by: MNT-HURC source: ARIN created: 2022-01-20T20:20:06Z last-modified: 2022-01-20T20:20:06Z rpki-ov-state: valid route6: 2402:5080::/32 descr: Owentis Singapore origin: AS133959 mnt-by: MAINT-OWENTIS-AP last-modified: 2015-05-07T07:48:34Z source: APNIC rpki-ov-state: valid