These entries are queried from radb.net using whois, you can try my project getting these.
:AS136512 route: 103.91.104.0/23 descr: Route Object for 103.91.104.0/23 country: BD origin: AS136512 mnt-lower: MAINT-ABBANK-BD mnt-routes: MAINT-ABBANK-BD mnt-by: MAINT-ABBANK-BD last-modified: 2017-05-02T08:56:50Z source: APNIC rpki-ov-state: valid route: 103.91.104.0/24 descr: Route Object for 103.91.104.0/24 country: BD origin: AS136512 mnt-lower: MAINT-ABBANK-BD mnt-routes: MAINT-ABBANK-BD mnt-by: MAINT-ABBANK-BD last-modified: 2017-05-02T08:56:50Z source: APNIC rpki-ov-state: valid route: 103.91.105.0/24 descr: Route Object for 103.91.105.0/24 country: BD origin: AS136512 mnt-lower: MAINT-ABBANK-BD mnt-routes: MAINT-ABBANK-BD mnt-by: MAINT-ABBANK-BD last-modified: 2017-05-02T08:56:50Z source: APNIC rpki-ov-state: valid route6: 2001:df1:700::/48 origin: AS136512 descr: AB Bank Limited IT Division, Corporate Office BCIC Bhaban, 30-31 Dilkusha C/A mnt-by: MAINT-ABBANK-BD last-modified: 2022-07-21T10:29:04Z source: APNIC rpki-ov-state: valid