These entries are queried from radb.net using whois, you can try my project getting these.
:AS131396 route: 103.144.84.0/23 descr: Hanoi Branch of Rmit University Vietnam LLC descr: Hanoi Branch of Rmit University Vietnam LLC origin: AS131396 mnt-by: MAINT-VN-VNNIC last-modified: 2019-10-30T08:37:26Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.253.88.0/22 descr: RUVN-AS-VN Rmit International University Vietnam origin: AS131396 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20170331 #15:23:27Z source: RADB last-modified: 2023-11-13T15:50:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.253.88.0/23 descr: RUVN-VN origin: AS131396 mnt-by: MAINT-VN-VNNIC last-modified: 2022-04-25T09:23:14Z source: APNIC rpki-ov-state: valid route: 103.253.88.0/23 descr: RUVN-AS-VN Rmit International University Vietnam origin: AS131396 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20171007 #11:42:58Z source: RADB last-modified: 2023-11-13T15:51:36Z rpki-ov-state: valid route: 103.253.88.0/24 descr: RUVN-VN origin: AS131396 mnt-by: MAINT-VN-VNNIC last-modified: 2022-04-25T09:23:16Z source: APNIC rpki-ov-state: valid route: 103.253.89.0/24 descr: RUVN-VN origin: AS131396 mnt-by: MAINT-VN-VNNIC last-modified: 2022-04-25T09:23:18Z source: APNIC rpki-ov-state: valid route: 103.253.90.0/23 descr: RUVN-VN origin: AS131396 mnt-by: MAINT-VN-VNNIC last-modified: 2022-04-25T09:24:30Z source: APNIC rpki-ov-state: valid route: 103.253.90.0/24 descr: RUVN-AS-VN Rmit International University Vietnam origin: AS131396 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20171007 #11:42:16Z source: RADB last-modified: 2023-11-13T15:51:36Z rpki-ov-state: valid route: 103.253.90.0/24 descr: RUVN-VN origin: AS131396 mnt-by: MAINT-VN-VNNIC last-modified: 2022-04-25T09:24:32Z source: APNIC rpki-ov-state: valid route: 103.253.91.0/24 descr: RUVN-VN origin: AS131396 mnt-by: MAINT-VN-VNNIC last-modified: 2022-04-25T09:24:34Z source: APNIC rpki-ov-state: valid