These entries are queried from radb.net using whois, you can try my project getting these.
:AS135037 route: 103.206.228.0/23 descr: Techno Asia BD origin: AS135037 mnt-by: MAINT-TECHNOASIA-BD last-modified: 2022-05-12T04:03:18Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.206.228.0/24 descr: Techno Asia BD origin: AS135037 mnt-by: MAINT-TECHNOASIA-BD last-modified: 2016-01-26T07:02:19Z source: APNIC rpki-ov-state: valid route: 103.206.229.0/24 descr: Techno Asia BD origin: AS135037 mnt-by: MAINT-TECHNOASIA-BD last-modified: 2016-01-26T07:02:39Z source: APNIC rpki-ov-state: valid route: 103.206.230.0/24 descr: Techno Asia BD origin: AS135037 mnt-by: MAINT-TECHNOASIA-BD last-modified: 2016-01-26T07:02:45Z source: APNIC rpki-ov-state: valid