These entries are queried from radb.net using whois, you can try my project getting these.
:AS142542 route: 103.168.206.0/24 origin: AS142542 descr: Md Mofazzel Hossain Saikat House-37, Road-26, Block-D, Parish road, Section-10, Mirpur mnt-by: MAINT-XCZ-BD last-modified: 2021-06-23T04:11:33Z source: APNIC rpki-ov-state: valid