These entries are queried from radb.net using whois, you can try my project getting these.
:AS139854 route: 103.146.10.0/23 origin: AS139854 descr: MD. FEROZ HOSSAIN 28 Landview, Dhaka-1212, Gulshan-2 mnt-by: MAINT-DIGINET-BD last-modified: 2019-12-05T10:28:30Z source: APNIC rpki-ov-state: valid route: 103.146.10.0/24 origin: AS139854 descr: MD. FEROZ HOSSAIN 28 Landview, Dhaka-1212, Gulshan-2 mnt-by: MAINT-DIGINET-BD last-modified: 2019-12-08T06:35:13Z country: BD mnt-routes: MAINT-DIGINET-BD mnt-lower: MAINT-DIGINET-BD source: APNIC rpki-ov-state: valid route: 103.146.11.0/24 origin: AS139854 descr: MD. FEROZ HOSSAIN 28 Landview, Dhaka-1212, Gulshan-2 descr: Digi Net mnt-by: MAINT-DIGINET-BD last-modified: 2019-12-08T09:45:41Z country: BD mnt-routes: MAINT-DIGINET-BD mnt-lower: MAINT-DIGINET-BD source: APNIC rpki-ov-state: valid