These entries are queried from radb.net using whois, you can try my project getting these.
:AS149524 route: 103.182.148.0/23 descr: route object for 103.182.148.0/23 country: BD origin: AS149524 mnt-lower: MAINT-BAHONLIMITED-BD mnt-routes: MAINT-BAHONLIMITED-BD mnt-by: MAINT-BAHONLIMITED-BD last-modified: 2022-04-07T13:37:24Z source: APNIC rpki-ov-state: valid route: 103.182.148.0/24 descr: route object for 103.182.148.0/24 country: BD origin: AS149524 mnt-lower: MAINT-BAHONLIMITED-BD mnt-routes: MAINT-BAHONLIMITED-BD mnt-by: MAINT-BAHONLIMITED-BD last-modified: 2022-04-07T13:37:24Z source: APNIC rpki-ov-state: valid route: 103.182.149.0/24 descr: route object for 103.182.149.0/24 country: BD origin: AS149524 mnt-lower: MAINT-BAHONLIMITED-BD mnt-routes: MAINT-BAHONLIMITED-BD mnt-by: MAINT-BAHONLIMITED-BD last-modified: 2022-04-07T13:37:25Z source: APNIC rpki-ov-state: valid route6: 2001:df0:7cc0::/48 origin: AS149524 descr: Bahon Limited Navana Tower, 10th Floor, Suite-AB, 45, Gulshan Avenue mnt-by: MAINT-BAHONLIMITED-BD last-modified: 2022-04-07T13:44:14Z source: APNIC rpki-ov-state: valid