These entries are queried from radb.net using whois, you can try my project getting these.
:AS63761 route: 103.70.28.0/22 descr: route object of IDEX origin: AS63761 remarks: this route is from customer of VIETTEL mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20161028 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.70.28.0/23 descr: route object of IDEX origin: AS63761 remarks: this route is from customer of VIETTEL mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20161028 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.70.28.0/24 descr: route object of IDEX origin: AS63761 remarks: this route is from customer of VIETTEL mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20161028 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.70.29.0/24 descr: route object of IDEX origin: AS63761 remarks: this route is from customer of VIETTEL mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20161028 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.70.30.0/23 descr: route object of IDEX origin: AS63761 remarks: this route is from customer of VIETTEL mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20161028 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.70.30.0/24 descr: route object of IDEX origin: AS63761 remarks: this route is from customer of VIETTEL mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20161028 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.70.31.0/24 descr: route object of IDEX origin: AS63761 remarks: this route is from customer of VIETTEL mnt-by: MAINT-VIETTEL changed: minhna4 [at] viettel.com.vn 20161028 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.167.12.0/22 descr: Customer of Viettel MAXDATA-AS-VN origin: AS63761 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20190702 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.167.12.0/22 descr: No. 98 lane 54, 37 Street, Tan Kieng Ward, District 7, Hochiminh City descr: No. 98 lane 54, 37 Street, Tan Kieng Ward, District 7, Hochiminh City descr: No. 98 lane 54, 37 Street, Tan Kieng Ward, District 7, Hochiminh City origin: AS63761 mnt-by: MAINT-VN-VNNIC last-modified: 2018-12-28T02:49:02Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.167.12.0/24 descr: Customer of Viettel MAXDATA-AS-VN origin: AS63761 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20190702 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.167.13.0/24 descr: Customer of Viettel MAXDATA-AS-VN origin: AS63761 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20190702 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.167.14.0/24 descr: Customer of Viettel MAXDATA-AS-VN origin: AS63761 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20190702 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.167.15.0/24 descr: Customer of Viettel MAXDATA-AS-VN origin: AS63761 notify: noc_ip [at] viettel.com.vn mnt-by: MAINT-VIETTEL changed: noc_ip@viettel 20190702 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source