These entries are queried from radb.net using whois, you can try my project getting these.
:AS56146 route: 223.27.104.0/21 descr: GLOBALCORP-VN descr: GLOBALCORP-VN origin: AS56146 mnt-by: MAINT-VN-VNNIC last-modified: 2018-03-28T04:10:25Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.104.0/22 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.104.0/22 descr: ODS origin: AS56146 mnt-by: MAINT-AS18403 changed: netadmin [at] fpt.vn 20150527 #17:46:21Z source: RADB last-modified: 2023-11-13T15:47:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.104.0/23 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.104.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20181019 source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.104.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.105.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.105.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20181019 source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.106.0/23 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.106.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20181019 source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.106.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.107.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20181019 source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.107.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.108.0/22 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20191109 source: RADB last-modified: 2023-11-13T15:58:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.108.0/22 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.108.0/23 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.108.0/23 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20191109 source: RADB last-modified: 2023-11-13T15:58:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.108.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.108.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20191109 source: RADB last-modified: 2023-11-13T15:58:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.109.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20191109 source: RADB last-modified: 2023-11-13T15:58:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.109.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.110.0/23 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.110.0/23 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20191109 source: RADB last-modified: 2023-11-13T15:58:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.110.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.110.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20191109 source: RADB last-modified: 2023-11-13T15:58:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.111.0/24 descr: route object for NGT Customer origin: AS56146 notify: noc [at] vnn.vn notify: bachhm [at] vdc.com.vn mnt-by: MAINT-VDC changed: bachhm [at] vdc.com.vn 20110906 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.27.111.0/24 descr: Proxy-registered route object origin: AS56146 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20191109 source: RADB last-modified: 2023-11-13T15:58:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source