These entries are queried from radb.net using whois, you can try my project getting these.
:AS59321 route: 103.213.28.0/23 descr: Route Object for 103.213.28.0/23 origin: AS59321 mnt-by: MAINT-SBL-BD mnt-routes: MAINT-SBL-BD last-modified: 2016-08-23T06:51:10Z source: APNIC rpki-ov-state: valid route: 103.213.28.0/24 descr: Route Object For 103.213.28.0/24 origin: AS59321 mnt-by: MAINT-SBL-BD country: BD last-modified: 2016-08-23T06:49:17Z source: APNIC rpki-ov-state: valid route: 103.213.29.0/24 descr: Route Object For 103.213.29.0/24 origin: AS59321 mnt-by: MAINT-SBL-BD mnt-routes: MAINT-SBL-BD country: BD last-modified: 2016-08-23T06:52:35Z source: APNIC rpki-ov-state: valid route: 103.226.122.0/24 descr: route object for 103.226.122.0/24 origin: AS59321 country: BD mnt-lower: MAINT-SBL-BD mnt-routes: MAINT-SBL-BD mnt-by: MAINT-SBL-BD last-modified: 2014-03-25T08:31:31Z source: APNIC rpki-ov-state: valid