These entries are queried from radb.net using whois, you can try my project getting these.
:AS141448 route: 103.159.170.0/24 origin: AS141448 descr: Md Sakhawat Hossein 14/A Syed Awolader Lane,Dhaka-1100 mnt-by: MAINT-ASONLINE-BD last-modified: 2020-12-11T13:25:09Z source: APNIC rpki-ov-state: valid