These entries are queried from radb.net using whois, you can try my project getting these.
:AS54187 route: 103.21.28.0/22 descr: Proxy-registered route object origin: AS54187 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140108 source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: valid route: 103.21.28.0/23 descr: Proxy-registered route object origin: AS54187 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140108 source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: valid route: 103.21.28.0/24 descr: Proxy-registered route object origin: AS54187 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140108 source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: valid route: 103.21.29.0/24 descr: Proxy-registered route object origin: AS54187 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140108 source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: valid route: 103.21.30.0/23 descr: Proxy-registered route object origin: AS54187 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140108 source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: valid route: 103.21.30.0/24 descr: Proxy-registered route object origin: AS54187 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140108 source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: valid route: 103.21.31.0/24 descr: Proxy-registered route object origin: AS54187 notify: matthew.chan [at] hgc.com.hk mnt-by: MAINT-HGC-INTL changed: matthew.chan [at] hgc.com.hk 20140108 source: RADB last-modified: 2023-11-13T15:45:58Z rpki-ov-state: valid