These entries are queried from radb.net using whois, you can try my project getting these.
:AS139872 route: 103.145.208.0/23 origin: AS139872 descr: Mst Monera Nisrin House#G12, Block#2, NewTown mnt-by: MAINT-RAPIDNET-BD last-modified: 2023-04-20T04:15:59Z source: APNIC rpki-ov-state: valid route: 103.145.208.0/24 origin: AS139872 descr: Mst Monera Nisrin House#G12, Block#2, NewTown mnt-by: MAINT-RAPIDNET-BD last-modified: 2023-04-20T04:19:12Z source: APNIC rpki-ov-state: valid route: 103.145.209.0/24 origin: AS139872 descr: Mst Monera Nisrin House#G12, Block#2, NewTown mnt-by: MAINT-RAPIDNET-BD last-modified: 2023-04-20T04:19:05Z source: APNIC rpki-ov-state: valid route6: 2001:df2:2780::/48 origin: AS139872 descr: Mst Monera Nisrin House#G12, Block#2, NewTown mnt-by: MAINT-RAPIDNET-BD last-modified: 2024-04-05T19:27:32Z source: APNIC rpki-ov-state: valid