These entries are queried from radb.net using whois, you can try my project getting these.
:AS131398 route: 103.225.236.0/22 descr: LDCC-VN origin: AS131398 mnt-by: MAINT-VN-VNNIC last-modified: 2022-01-17T01:56:43Z source: APNIC rpki-ov-state: valid route: 103.225.236.0/23 descr: LDCC-VN origin: AS131398 mnt-by: MAINT-VN-VNNIC last-modified: 2022-01-17T01:56:46Z source: APNIC rpki-ov-state: valid route: 103.225.236.0/24 descr: LOTTE origin: AS131398 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20141008 #07:45:24Z source: RADB last-modified: 2023-11-13T15:46:41Z rpki-ov-state: valid route: 103.225.236.0/24 descr: LDCC-VN origin: AS131398 mnt-by: MAINT-VN-VNNIC last-modified: 2022-01-17T01:56:49Z source: APNIC rpki-ov-state: valid route: 103.225.236.0/24 descr: LDCC origin: AS131398 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 20140224 source: NTTCOM rpki-ov-state: valid route: 103.225.237.0/24 descr: LDCC-VN origin: AS131398 mnt-by: MAINT-VN-VNNIC last-modified: 2022-01-17T01:56:52Z source: APNIC rpki-ov-state: valid route: 103.225.237.0/24 descr: CMI (Customer Route) origin: AS131398 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20170707 source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: valid route: 103.225.237.0/24 descr: LDCC origin: AS131398 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 20140224 source: NTTCOM rpki-ov-state: valid route: 103.225.238.0/23 descr: LDCC-VN origin: AS131398 mnt-by: MAINT-VN-VNNIC last-modified: 2022-01-17T01:56:55Z source: APNIC rpki-ov-state: valid route: 103.225.238.0/24 descr: LDCC origin: AS131398 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 20140224 source: NTTCOM rpki-ov-state: valid route: 103.225.238.0/24 descr: CMI (Customer Route) origin: AS131398 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20170707 source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: valid route: 103.225.238.0/24 descr: LDCC-VN origin: AS131398 mnt-by: MAINT-VN-VNNIC last-modified: 2022-01-17T01:56:58Z source: APNIC rpki-ov-state: valid route: 103.225.239.0/24 descr: LDCC-VN origin: AS131398 mnt-by: MAINT-VN-VNNIC last-modified: 2022-01-17T01:57:01Z source: APNIC rpki-ov-state: valid route: 103.225.239.0/24 descr: CMI (Customer Route) origin: AS131398 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20170707 source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: valid route: 103.225.239.0/24 descr: LDCC origin: AS131398 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 20140224 source: NTTCOM rpki-ov-state: valid