These entries are queried from radb.net using whois, you can try my project getting these.
:AS138459 route: 103.127.152.0/23 origin: AS138459 descr: NEC ASIA PACIFIC PTE LTD 80 Bendemeer Road #05-01/02 mnt-by: MAINT-NAPPL-SG last-modified: 2020-02-27T07:07:06Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source