These entries are queried from radb.net using whois, you can try my project getting these.
:AS138412 route: 103.124.248.0/23 descr: Route object for 103.124.248.0/23 origin: AS138412 mnt-by: MAINT-ASIANCOMMUNICATION-BD last-modified: 2018-11-10T15:41:55Z source: APNIC rpki-ov-state: valid route: 103.124.248.0/24 descr: Route object for 103.124.248.0/24 origin: AS138412 mnt-by: MAINT-ASIANCOMMUNICATION-BD last-modified: 2018-11-10T15:46:55Z source: APNIC rpki-ov-state: valid route: 103.124.249.0/24 descr: Route object for 103.124.249.0/24 origin: AS138412 mnt-by: MAINT-ASIANCOMMUNICATION-BD last-modified: 2018-11-10T15:45:59Z source: APNIC rpki-ov-state: valid route: 103.124.250.0/23 origin: AS138412 descr: Golam Rabbani Chowdhury House#10, Block-B, Road#12, Section-10, Mirpur-10 mnt-by: MAINT-ASIANCOMMUNICATION-BD last-modified: 2020-01-22T06:11:29Z source: APNIC rpki-ov-state: valid