These entries are queried from radb.net using whois, you can try my project getting these.
:AS139931 route: 103.16.152.0/22 origin: AS139931 descr: Bangladesh Submarine Cable Company Limited (BSCCL) 7th Floor, 191, Tejgaon Gulshan Link Road mnt-by: MAINT-BANGLADESH-BD last-modified: 2024-03-24T06:35:59Z source: APNIC rpki-ov-state: valid route: 103.16.153.0/24 origin: AS139931 descr: Bangladesh Submarine Cable Company Limited (BSCCL) 7th Floor, 191, Tejgaon Gulshan Link Road mnt-by: MAINT-BANGLADESH-BD last-modified: 2021-06-10T14:39:03Z source: APNIC rpki-ov-state: valid route6: 2406:4b00:a::/48 origin: AS139931 descr: Bangladesh Submarine Cable Company Limited (BSCCL) 7th Floor, 191, Tejgaon Gulshan Link Road mnt-by: MAINT-BANGLADESH-BD last-modified: 2021-06-22T07:25:22Z source: APNIC rpki-ov-state: valid