These entries are queried from radb.net using whois, you can try my project getting these.
:AS58668 route: 103.12.236.0/22 origin: AS58668 descr: BD Link Communication Ltd Red Crescent Borak Tower, Level-M 37/3/A, Easkaton Garden Road mnt-by: MAINT-BD-LINK-BD last-modified: 2023-10-03T02:55:17Z source: APNIC rpki-ov-state: valid route: 103.12.236.0/23 origin: AS58668 descr: BD Link Communication Ltd Red Crescent Borak Tower, Level-M 37/3/A, Easkaton Garden Road mnt-by: MAINT-BD-LINK-BD last-modified: 2023-10-03T02:55:19Z source: APNIC rpki-ov-state: valid route: 103.12.236.0/24 origin: AS58668 descr: BD Link Communication Ltd Red Crescent Borak Tower, Level-M 37/3/A, Easkaton Garden Road mnt-by: MAINT-BD-LINK-BD last-modified: 2023-10-03T02:53:51Z source: APNIC rpki-ov-state: valid route: 103.12.237.0/24 origin: AS58668 descr: BD Link Communication Ltd Red Crescent Borak Tower, Level-M 37/3/A, Easkaton Garden Road mnt-by: MAINT-BD-LINK-BD last-modified: 2023-10-03T02:53:52Z source: APNIC rpki-ov-state: valid route: 103.12.238.0/23 origin: AS58668 descr: BD Link Communication Ltd Red Crescent Borak Tower, Level-M 37/3/A, Easkaton Garden Road mnt-by: MAINT-BD-LINK-BD last-modified: 2023-10-03T02:55:20Z source: APNIC rpki-ov-state: valid route: 103.12.238.0/24 origin: AS58668 descr: BD Link Communication Ltd Red Crescent Borak Tower, Level-M 37/3/A, Easkaton Garden Road mnt-by: MAINT-BD-LINK-BD last-modified: 2023-10-03T02:53:53Z source: APNIC rpki-ov-state: valid route: 103.12.239.0/24 origin: AS58668 descr: BD Link Communication Ltd Red Crescent Borak Tower, Level-M 37/3/A, Easkaton Garden Road mnt-by: MAINT-BD-LINK-BD last-modified: 2023-10-03T02:53:54Z source: APNIC rpki-ov-state: valid