These entries are queried from radb.net using whois, you can try my project getting these.
:AS131415 route: 203.119.64.0/22 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:09:20Z source: APNIC rpki-ov-state: valid route: 203.119.64.0/22 descr: Vietnam Network Information Center origin: AS131415 notify: noc [at] vnn.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130307 source: NTTCOM rpki-ov-state: valid route: 203.119.64.0/22 descr: CMI (Customer Route) origin: AS131415 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20180620 source: RADB last-modified: 2023-11-13T15:54:00Z rpki-ov-state: valid route: 203.119.64.0/23 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:09:23Z source: APNIC rpki-ov-state: valid route: 203.119.64.0/24 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:09:26Z source: APNIC rpki-ov-state: valid route: 203.119.65.0/24 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:09:29Z source: APNIC rpki-ov-state: valid route: 203.119.66.0/23 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:09:32Z source: APNIC rpki-ov-state: valid route: 203.119.66.0/24 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:09:35Z source: APNIC rpki-ov-state: valid route: 203.119.67.0/24 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:09:37Z source: APNIC rpki-ov-state: valid route6: 2001:dc8:9000::/48 descr: VNNIC origin: AS131415 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn notify: ntcong [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20140815 source: NTTCOM rpki-ov-state: valid route6: 2001:dc8:9000::/48 descr: VNNIC-VN origin: AS131415 mnt-by: MAINT-VN-VNNIC last-modified: 2021-12-23T11:10:01Z source: APNIC rpki-ov-state: valid