These entries are queried from radb.net using whois, you can try my project getting these.
:AS131400 route: 103.226.248.0/22 descr: CMC Telecom 's Customer: G-DATA origin: AS131400 mnt-by: MAINT-AS45903 changed: inoc [at] cmctelecom.vn 20140806 #15:39:57Z source: RADB last-modified: 2023-11-13T15:59:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.248.0/22 descr: Gdata origin: AS131400 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20150122 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.248.0/23 descr: Gdata origin: AS131400 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20150122 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.248.0/23 descr: CMC Telecom 's Customer: GDATA origin: AS131400 mnt-by: MAINT-AS45903 changed: inoc [at] cmctelecom.vn 20140807 #06:39:22Z source: RADB last-modified: 2023-11-13T15:59:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.248.0/24 descr: Gdata origin: AS131400 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20150122 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.249.0/24 descr: Gdata origin: AS131400 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20150122 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.250.0/23 descr: CMC Telecom 's Customer: GDATA origin: AS131400 mnt-by: MAINT-AS45903 changed: inoc [at] cmctelecom.vn 20140807 #06:40:32Z source: RADB last-modified: 2023-11-13T15:59:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.250.0/23 descr: Gdata origin: AS131400 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20150122 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.250.0/24 descr: Gdata origin: AS131400 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20150122 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.226.251.0/24 descr: Gdata origin: AS131400 notify: noc [at] vnn.vn notify: luanlt [at] vdc.com.vn mnt-by: MAINT-VDC changed: htruong [at] vdc.com.vn 20150122 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source