These entries are queried from radb.net using whois, you can try my project getting these.
:AS135308 route: 103.173.10.0/23 descr: Route Object for 103.173.10.0/23 origin: AS135308 mnt-by: MAINT-MSDIGITALTELECOM-BD country: BD last-modified: 2021-09-11T04:17:01Z source: APNIC rpki-ov-state: valid route: 103.173.10.0/24 descr: Route Object For 103.173.10.0/24 origin: AS135308 mnt-by: MAINT-MSDIGITALTELECOM-BD country: BD last-modified: 2021-09-11T04:18:28Z source: APNIC rpki-ov-state: valid route: 103.173.11.0/24 descr: Route Object For 103.173.11.0/24 origin: AS135308 mnt-by: MAINT-MSDIGITALTELECOM-BD country: BD last-modified: 2021-09-11T04:19:38Z source: APNIC rpki-ov-state: valid