These entries are queried from radb.net using whois, you can try my project getting these.
:AS139929 route: 103.147.252.0/24 descr: CTC-HK-V4-SUBNET1 origin: AS139929 mnt-by: MAINT-CHICAGO-TRADING-COMPANY-HK last-modified: 2020-02-10T20:31:10Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:df2:b080::/48 descr: CTC-HK-V6-SUBNET1 origin: AS139929 mnt-by: MAINT-CHICAGO-TRADING-COMPANY-HK last-modified: 2020-02-10T20:31:50Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source