These entries are queried from radb.net using whois, you can try my project getting these.
:AS58946 route: 103.26.136.0/23 descr: Route Object origin: AS58946 country: BD mnt-lower: MAINT-BD-GRAMEEN1 mnt-routes: MAINT-GRAMEEN1-BD mnt-by: MAINT-GRAMEEN1-BD last-modified: 2013-07-09T09:39:26Z source: APNIC rpki-ov-state: valid route: 103.26.136.0/24 descr: Route Object origin: AS58946 country: BD mnt-lower: MAINT-BD-GRAMEEN1 mnt-routes: MAINT-GRAMEEN1-BD mnt-by: MAINT-GRAMEEN1-BD last-modified: 2013-07-09T09:39:50Z source: APNIC rpki-ov-state: valid route: 103.26.137.0/24 descr: Route Object origin: AS58946 country: BD mnt-lower: MAINT-BD-GRAMEEN1 mnt-routes: MAINT-GRAMEEN1-BD mnt-by: MAINT-GRAMEEN1-BD last-modified: 2013-07-09T09:40:04Z source: APNIC rpki-ov-state: valid