These entries are queried from radb.net using whois, you can try my project getting these.
:AS137018 route: 103.149.60.0/24 origin: AS137018 descr: Md Anisur Rahaman 44, North Kafrul, Dhaka Cantt. mnt-by: MAINT-BLUE1-BD last-modified: 2020-09-17T06:33:13Z source: APNIC rpki-ov-state: valid