These entries are queried from radb.net using whois, you can try my project getting these.
:AS131380 route: 103.248.164.0/22 descr: NITECO-VN origin: AS131380 mnt-by: MAINT-VN-VNNIC last-modified: 2016-04-27T09:34:30Z source: APNIC rpki-ov-state: valid route: 103.248.164.0/22 descr: AS131380 origin: AS131380 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20130808 #02:50:42Z source: RADB last-modified: 2023-11-13T15:45:33Z rpki-ov-state: valid route: 103.248.164.0/22 descr: NITECO - VIETNAM origin: AS131380 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130708 source: NTTCOM rpki-ov-state: valid route: 103.248.164.0/23 descr: NITECO - VIETNAM origin: AS131380 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130708 source: NTTCOM rpki-ov-state: valid route: 103.248.164.0/23 origin: AS131380 descr: NITECO-VN mnt-by: MAINT-VN-VNNIC last-modified: 2020-05-04T05:43:33Z source: APNIC rpki-ov-state: valid route: 103.248.164.0/24 descr: NITECO - VIETNAM origin: AS131380 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130708 source: NTTCOM rpki-ov-state: valid route: 103.248.164.0/24 origin: AS131380 descr: NITECO-VN mnt-by: MAINT-VN-VNNIC last-modified: 2020-05-04T05:43:57Z source: APNIC rpki-ov-state: valid route: 103.248.165.0/24 origin: AS131380 descr: NITECO-VN mnt-by: MAINT-VN-VNNIC last-modified: 2020-05-04T05:44:11Z source: APNIC rpki-ov-state: valid route: 103.248.165.0/24 descr: NITECO - VIETNAM origin: AS131380 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130708 source: NTTCOM rpki-ov-state: valid route: 103.248.166.0/23 origin: AS131380 descr: NITECO-VN mnt-by: MAINT-VN-VNNIC last-modified: 2020-05-04T05:44:27Z source: APNIC rpki-ov-state: valid route: 103.248.166.0/23 descr: NITECO - VIETNAM origin: AS131380 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130708 source: NTTCOM rpki-ov-state: valid route: 103.248.166.0/24 descr: NITECO - VIETNAM origin: AS131380 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130708 source: NTTCOM rpki-ov-state: valid route: 103.248.166.0/24 origin: AS131380 descr: NITECO-VN mnt-by: MAINT-VN-VNNIC last-modified: 2020-05-04T05:44:48Z source: APNIC rpki-ov-state: valid route: 103.248.167.0/24 descr: NITECO - VIETNAM origin: AS131380 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20130708 source: NTTCOM rpki-ov-state: valid route: 103.248.167.0/24 origin: AS131380 descr: NITECO-VN mnt-by: MAINT-VN-VNNIC last-modified: 2020-05-04T05:45:00Z source: APNIC rpki-ov-state: valid