These entries are queried from radb.net using whois, you can try my project getting these.
:AS139583 route: 103.136.255.0/24 origin: AS139583 descr: Silk Contract Logistics Pty Ltd. 850 Lorimer Street mnt-by: MAINT-SCL-AU last-modified: 2021-03-15T05:56:47Z source: APNIC rpki-ov-state: valid