These entries are queried from radb.net using whois, you can try my project getting these.
:AS142619 route: 103.171.28.0/23 origin: AS142619 descr: Md Sahadat Hossain Sajib Dandabor, Savar Cantt., Savar mnt-by: MAINT-UIT-BD last-modified: 2021-11-29T08:39:15Z source: APNIC rpki-ov-state: valid route: 103.171.28.0/24 descr: First-Block origin: AS142619 mnt-by: MAINT-UIT-BD last-modified: 2021-11-29T00:45:40Z source: APNIC rpki-ov-state: valid route: 103.171.29.0/24 descr: Second-Block origin: AS142619 mnt-by: MAINT-UIT-BD last-modified: 2021-11-29T00:47:07Z source: APNIC rpki-ov-state: valid