These entries are queried from radb.net using whois, you can try my project getting these.
:AS150408 route: 103.31.10.0/24 origin: AS150408 descr: Kamrul Hasan Purinda Bazar, Satgram, Araihazar mnt-by: MAINT-EXTREMECOM-BD last-modified: 2024-04-04T08:35:56Z source: APNIC rpki-ov-state: valid