These entries are queried from radb.net using whois, you can try my project getting these.
:AS63917 route: 103.44.16.0/23 origin: AS63917 descr: Amway Japan G.K 7-1, Udagawacho, Shibuya-ku mnt-by: MAINT-AMWAYJAPANGK-JP last-modified: 2019-07-04T09:36:08Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source