These entries are queried from radb.net using whois, you can try my project getting these.
:AS138904 route: 103.136.236.0/22 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:12Z source: APNIC rpki-ov-state: valid route: 103.136.236.0/23 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:13Z source: APNIC rpki-ov-state: valid route: 103.136.236.0/24 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:14Z source: APNIC rpki-ov-state: valid route: 103.136.237.0/24 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:15Z source: APNIC rpki-ov-state: valid route: 103.136.238.0/23 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:16Z source: APNIC rpki-ov-state: valid route: 103.136.238.0/24 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:17Z source: APNIC rpki-ov-state: valid route: 103.136.239.0/24 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:18Z source: APNIC rpki-ov-state: valid route6: 2001:df0:f80::/48 origin: AS138904 descr: Jessore University of Science and Technology Jessore University of Science and Technology (JUST) mnt-by: MAINT-JUST-BD last-modified: 2020-01-05T04:52:54Z source: APNIC rpki-ov-state: valid