These entries are queried from radb.net using whois, you can try my project getting these.
:AS150304 route: 103.217.250.0/23 origin: AS150304 descr: Bangladesh Television Head Office, Rampura, Dhaka 1219 mnt-by: MAINT-BANGLADESH10-BD last-modified: 2022-09-07T06:09:28Z source: APNIC rpki-ov-state: valid route: 103.217.250.0/24 origin: AS150304 descr: Bangladesh Television Head Office, Rampura, Dhaka 1219 mnt-by: MAINT-BANGLADESH10-BD last-modified: 2022-09-07T06:09:29Z source: APNIC rpki-ov-state: valid route: 103.217.251.0/24 origin: AS150304 descr: Bangladesh Television Head Office, Rampura, Dhaka 1219 mnt-by: MAINT-BANGLADESH10-BD last-modified: 2022-09-07T06:09:29Z source: APNIC rpki-ov-state: valid