These entries are queried from radb.net using whois, you can try my project getting these.
:AS140807 route: 103.21.96.0/23 descr: TNDHCM-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2023-09-03T07:14:57Z source: APNIC rpki-ov-state: valid route: 103.21.100.0/23 descr: TNDVPS-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2023-09-05T02:42:45Z source: APNIC rpki-ov-state: valid route: 103.139.42.0/23 descr: TND-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-07-19T05:14:04Z source: APNIC rpki-ov-state: valid route: 103.148.254.0/23 descr: TNDHN-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-07-14T11:44:08Z source: APNIC rpki-ov-state: valid route: 103.162.94.0/23 origin: AS140807 descr: TNDHP-VN mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20220315 #02:37:39Z source: RADB last-modified: 2023-11-13T16:10:08Z rpki-ov-state: valid route: 103.162.94.0/23 descr: TNDHP-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-07-02T10:12:11Z source: APNIC rpki-ov-state: valid route: 103.171.94.0/23 descr: TNDSOFT-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-08-18T00:53:13Z source: APNIC rpki-ov-state: valid route: 103.172.62.0/23 descr: TNDCL-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-08-31T04:54:52Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.172.64.0/23 descr: TNDBCN-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-08-31T04:27:25Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.172.66.0/23 descr: TNDCLOUD-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-08-31T04:31:12Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.172.68.0/23 descr: TNDVTK-VN origin: AS140807 mnt-by: MAINT-VN-VNNIC last-modified: 2021-08-31T04:26:06Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:dac0::/48 origin: AS140807 descr: Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi mnt-by: MAINT-VN-VNNIC last-modified: 2021-08-13T04:12:58Z source: APNIC rpki-ov-state: valid