These entries are queried from radb.net using whois, you can try my project getting these.
:AS139974 route: 103.147.251.0/24 origin: AS139974 descr: route-object for AS139974 mnt-by: MAINT-AS138129 changed: sebastian [at] siapnetworks.co.id 20220802 #09:13:45Z source: RADB last-modified: 2023-11-13T16:19:29Z rpki-ov-state: valid route: 103.147.251.0/24 descr: Universitas Muria Kudus origin: AS139974 mnt-by: MAINT-ID-UMK country: ID last-modified: 2021-05-21T05:42:08Z source: APNIC rpki-ov-state: valid route: 103.147.251.0/24 descr: Universitas Muria Kudus origin: AS139974 mnt-by: MAINT-ID-UMK last-modified: 2021-05-04T08:34:10Z source: IDNIC rpki-ov-state: valid