These entries are queried from radb.net using whois, you can try my project getting these.
:AS136425 route: 103.87.136.0/22 descr: ASIANET ONLINE SERVICE//ISP origin: AS136425 mnt-by: MAINT-ASIA-NET-BD country: BD mnt-routes: MAINT-ASIA-NET-BD mnt-lower: MAINT-ASIA-NET-BD last-modified: 2020-11-05T18:56:07Z source: APNIC rpki-ov-state: valid route: 103.87.136.0/23 descr: ASIA NET ONLINE SERVICE//ISP origin: AS136425 mnt-by: MAINT-ASIA-NET-BD country: BD mnt-routes: MAINT-ASIA-NET-BD mnt-lower: MAINT-ASIA-NET-BD last-modified: 2020-10-12T16:16:12Z source: APNIC rpki-ov-state: valid route: 103.87.136.0/24 descr: ASIA NET ONLINE SERVICE//ISP origin: AS136425 mnt-by: MAINT-ASIA-NET-BD country: BD mnt-routes: MAINT-ASIA-NET-BD mnt-lower: MAINT-ASIA-NET-BD last-modified: 2020-10-12T16:16:26Z source: APNIC rpki-ov-state: valid route: 103.87.137.0/24 descr: ASIA NET ONLINE SERVICE//ISP origin: AS136425 mnt-by: MAINT-ASIA-NET-BD country: BD mnt-routes: MAINT-ASIA-NET-BD mnt-lower: MAINT-ASIA-NET-BD last-modified: 2020-10-12T16:16:39Z source: APNIC rpki-ov-state: valid route: 103.87.138.0/23 descr: ASIA NET ONLINE SERVICE//ISP origin: AS136425 mnt-by: MAINT-ASIA-NET-BD country: BD mnt-routes: MAINT-ASIA-NET-BD mnt-lower: MAINT-ASIA-NET-BD last-modified: 2020-10-12T16:16:52Z source: APNIC rpki-ov-state: valid route: 103.87.138.0/24 origin: AS136425 descr: ASIANET ONLINE SERVICE//ISP mnt-by: MAINT-ASIA-NET-BD last-modified: 2020-11-05T18:56:32Z country: BD source: APNIC rpki-ov-state: valid route: 103.87.139.0/24 descr: ASIA NET ONLINE SERVICE//ISP descr: ASIANET ONLINE SERVICE//ISP origin: AS136425 mnt-by: MAINT-ASIA-NET-BD country: BD mnt-routes: MAINT-ASIA-NET-BD mnt-lower: MAINT-ASIA-NET-BD last-modified: 2020-11-05T18:57:04Z source: APNIC rpki-ov-state: valid