These entries are queried from radb.net using whois, you can try my project getting these.
:AS146946 route: 103.171.232.0/23 origin: AS146946 descr: Tarek Hossain 230 Hazi Yesmin Ali Lane mnt-by: MAINT-TSNETWORK-BD last-modified: 2021-09-04T12:41:00Z source: APNIC rpki-ov-state: valid route: 103.171.232.0/24 origin: AS146946 descr: Tarek Hossain 230 Hazi Yesmin Ali Lane mnt-by: MAINT-TSNETWORK-BD last-modified: 2021-09-04T12:39:37Z source: APNIC rpki-ov-state: valid route: 103.171.233.0/24 origin: AS146946 descr: Tarek Hossain 230 Hazi Yesmin Ali Lane mnt-by: MAINT-TSNETWORK-BD last-modified: 2021-09-04T12:40:28Z source: APNIC rpki-ov-state: valid