These entries are queried from radb.net using whois, you can try my project getting these.
:AS131356 route: 103.140.100.0/23 descr: Customer of Viettel PEGASUS-AS-VN origin: AS131356 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20200225 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.140.100.0/24 descr: Pegasus Technology Joint Stock Company descr: Pegasus Technology Joint Stock Company origin: AS131356 mnt-by: MAINT-VN-VNNIC last-modified: 2020-02-17T09:28:12Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.140.100.0/24 descr: Customer of Viettel PEGASUS-AS-VN origin: AS131356 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20200225 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.140.100.0/24 origin: AS131356 descr: VNPT IDC mnt-by: MAINT-AS45899 changed: radb [at] vnpt.vn 20201217 #08:11:20Z source: RADB last-modified: 2023-11-13T16:07:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.140.101.0/24 descr: Customer of Viettel PEGASUS-AS-VN origin: AS131356 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20200225 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.147.123.0/24 descr: Customer of Viettel PEGASUS-AS-VN origin: AS131356 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20200226 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:fb40::/48 descr: Pegasus Technology Joint Stock Company descr: Pegasus Technology Joint Stock Company origin: AS131356 mnt-by: MAINT-VN-VNNIC last-modified: 2020-02-17T09:29:04Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2404:fb40::/48 descr: PEGASUS-AS-VN origin: AS131356 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip [at] viettel.com.vn 20200225 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source