These entries are queried from radb.net using whois, you can try my project getting these.
:AS139919 route: 103.147.24.0/24 origin: AS139919 descr: Razib Hossain Dapa Idrakpur Railway Station Road,Fatullah Narayangonj-1421 mnt-by: MAINT-RDCONLINE-BD last-modified: 2020-01-02T13:04:53Z source: APNIC rpki-ov-state: valid route: 103.147.25.0/24 origin: AS139919 descr: Razib Hossain Dapa Idrakpur Railway Station Road,Fatullah Narayangonj-1421 mnt-by: MAINT-RDCONLINE-BD last-modified: 2020-01-02T13:05:12Z source: APNIC rpki-ov-state: valid