These entries are queried from radb.net using whois, you can try my project getting these.
:AS150782 route: 103.197.50.0/24 origin: AS150782 descr: MD RASHADUL ISLAM, MD ELIYAS, ABDUS SALAM 1511, Paterbag, Donia, mnt-by: MAINT-PCVBROADBAND-BD last-modified: 2023-03-04T12:50:37Z source: APNIC rpki-ov-state: valid