These entries are queried from radb.net using whois, you can try my project getting these.
:AS139053 route: 103.138.250.0/24 origin: AS139053 descr: Jhongkar iT mnt-by: MAINT-JHONGKARIT1-BD last-modified: 2023-10-18T07:56:48Z country: BD source: APNIC rpki-ov-state: valid route: 103.138.251.0/24 origin: AS139053 descr: Jhongkar iT mnt-by: MAINT-JHONGKARENGINEERS-BD last-modified: 2023-10-18T07:56:48Z country: BD source: APNIC rpki-ov-state: valid route: 103.214.82.0/24 origin: AS139053 descr: JHONGKAR IT mnt-by: MAINT-PO-BD last-modified: 2023-10-18T07:56:48Z source: APNIC rpki-ov-state: valid route: 103.214.83.0/24 origin: AS139053 descr: JHONGKAR IT mnt-by: MAINT-PO-BD last-modified: 2023-10-18T07:56:49Z source: APNIC rpki-ov-state: valid