These entries are queried from radb.net using whois, you can try my project getting these.
:AS137871 route: 103.240.3.0/24 origin: AS137871 descr: AIRNET known as ITNET mnt-by: MAINT-AIRNET-BSL-BD last-modified: 2024-01-28T20:17:00Z country: BD source: APNIC rpki-ov-state: valid route6: 2406:1dc0::/32 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:09Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0::/33 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:09Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0::/34 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:09Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:09Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:09Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:1000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:09Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:2000::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:10Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:2000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:10Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:3000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:10Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:4000::/34 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:10Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:4000::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:10Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:4000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:10Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:5000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:10Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:6000::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:6000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:7000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:8000::/33 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:8000::/34 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:8000::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:8000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:9000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:11Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:a000::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:12Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:a000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:12Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:b000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:12Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:c000::/34 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:12Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:c000::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:12Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:c000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:12Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:d000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:13Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:e000::/35 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:13Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:e000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:13Z source: APNIC rpki-ov-state: valid route6: 2406:1dc0:f000::/36 origin: AS137871 descr: Md. Arman Hossain mnt-by: MAINT-ITNET-BD last-modified: 2023-11-09T00:45:13Z source: APNIC rpki-ov-state: valid