These entries are queried from radb.net using whois, you can try my project getting these.
:AS132580 route: 43.228.211.0/24 origin: AS132580 descr: LEVEL3 CARRIER LIMITED 82 Mohakhali Tower Mohakhali C/A mnt-by: MAINT-LEVEL3-BD last-modified: 2019-11-18T08:01:17Z source: APNIC rpki-ov-state: valid