These entries are queried from radb.net using whois, you can try my project getting these.
:AS135946 route: 103.106.220.0/22 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:03:30Z source: APNIC rpki-ov-state: valid route: 103.106.220.0/23 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:03:32Z source: APNIC rpki-ov-state: valid route: 103.106.220.0/24 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:03:34Z source: APNIC rpki-ov-state: valid route: 103.106.221.0/24 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:03:36Z source: APNIC rpki-ov-state: valid route: 103.106.222.0/23 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:03:39Z source: APNIC rpki-ov-state: valid route: 103.106.222.0/24 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:03:41Z source: APNIC rpki-ov-state: valid route: 103.106.223.0/24 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:03:43Z source: APNIC rpki-ov-state: valid route6: 2001:df3:b500::/48 origin: AS135946 descr: Long An Department of Information and Communications mnt-by: MAINT-AS45899 changed: radb [at] vnpt.vn 20220928 #07:20:15Z source: RADB last-modified: 2023-11-13T16:12:32Z rpki-ov-state: valid route6: 2001:df3:b500::/48 descr: STTTTLA-VN origin: AS135946 mnt-by: MAINT-VN-VNNIC last-modified: 2022-11-16T18:04:40Z source: APNIC rpki-ov-state: valid