These entries are queried from radb.net using whois, you can try my project getting these.
:AS63503 route: 103.39.52.0/24 descr: Route Object for AS63503 origin: AS63503 notify: ipnoc [at] pgascom.co.id mnt-by: MAINT-AS58463 changed: ipnoc [at] pgascom.co.id 20200330 source: RADB last-modified: 2023-11-13T16:00:17Z rpki-ov-state: valid route: 103.39.52.0/24 descr: route-object for AS45298 origin: AS63503 remarks: Transit via AS2914 Customers notify: support [at] ntt.net.id mnt-by: MAINT-AS10217 changed: sadewo.ari [at] ntt.co.id 20161226 source: NTTCOM rpki-ov-state: valid route: 103.39.52.0/24 descr: Routes announced to Level 3 by BIZNET. origin: AS63503 mnt-by: BIZNET-MNT changed: noc [at] biznetnetworks.com 20161226 source: LEVEL3 rpki-ov-state: valid