These entries are queried from radb.net using whois, you can try my project getting these.
:AS140976 route: 103.83.82.0/23 origin: AS140976 descr: Bangla52 mnt-by: MAINT-BANGLA521-BD last-modified: 2022-08-03T05:51:35Z source: APNIC rpki-ov-state: valid route: 103.83.82.0/24 origin: AS140976 descr: Bangla52 mnt-by: MAINT-BANGLA521-BD last-modified: 2022-08-03T05:52:09Z source: APNIC rpki-ov-state: valid route: 103.83.83.0/24 origin: AS140976 descr: Bangla52 mnt-by: MAINT-BANGLA521-BD last-modified: 2022-08-03T05:49:02Z source: APNIC rpki-ov-state: valid route6: 2001:df1:1540::/48 origin: AS140976 descr: Bangla52 mnt-by: MAINT-BANGLA521-BD last-modified: 2022-08-03T05:52:38Z source: APNIC rpki-ov-state: valid