These entries are queried from radb.net using whois, you can try my project getting these.
:AS150737 route: 103.77.116.0/23 descr: VOLONET-BD country: BD mnt-lower: MAINT-VOLONET-BD mnt-routes: MAINT-VOLONET-BD mnt-by: MAINT-VOLONET-BD origin: AS150737 last-modified: 2023-01-27T15:23:38Z source: APNIC rpki-ov-state: valid route: 103.77.116.0/24 descr: Akram Hossain t/a Digital Think Online & Network System country: BD mnt-lower: MAINT-VOLONET-BD mnt-routes: MAINT-VOLONET-BD notify: abuse [at] volonetbd.com origin: AS150737 mnt-by: MAINT-VOLONET-BD last-modified: 2024-03-14T15:00:34Z source: APNIC rpki-ov-state: valid route: 103.77.117.0/24 descr: VOLONET-BD country: BD mnt-lower: MAINT-VOLONET-BD mnt-routes: MAINT-VOLONET-BD origin: AS150737 mnt-by: MAINT-VOLONET-BD last-modified: 2023-01-27T15:26:40Z source: APNIC rpki-ov-state: valid