These entries are queried from radb.net using whois, you can try my project getting these.
:AS135924 route: 103.99.252.0/22 origin: AS135924 descr: VNPT-Customer-FWD Vietnam Life Insurance mnt-by: MAINT-AS45899 changed: radb [at] vnpt.vn 20221128 notify: ktm.ip [at] vnpt.vn source: RADB last-modified: 2023-11-13T16:13:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.99.252.0/22 descr: Customer of Viettel FWD-AS-VN origin: AS135924 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20171202 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.99.252.0/23 descr: Customer of Viettel FWD-AS-VN origin: AS135924 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20171202 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.99.252.0/24 descr: Customer of Viettel FWD-AS-VN origin: AS135924 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20171202 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.99.253.0/24 descr: Customer of Viettel FWD-AS-VN origin: AS135924 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20171202 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.99.254.0/23 descr: Customer of Viettel FWD-AS-VN origin: AS135924 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20171202 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.99.254.0/24 descr: Customer of Viettel FWD-AS-VN origin: AS135924 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20171202 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.99.255.0/24 descr: Customer of Viettel FWD-AS-VN origin: AS135924 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20171202 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source