These entries are queried from radb.net using whois, you can try my project getting these.
:AS141988 route: 103.163.246.0/23 descr: Optimus Technologies descr: DBI Building, Level-04, 105 Shukrabad, Mirpur Road origin: AS141988 mnt-by: MAINT-OPTIMUS-BD last-modified: 2021-03-15T11:09:23Z source: APNIC rpki-ov-state: valid route: 103.163.246.0/24 descr: Optimus Technologies descr: DBI Building, Level-04, 105 Shukrabad, Mirpur Road origin: AS141988 mnt-by: MAINT-OPTIMUS-BD last-modified: 2021-03-15T11:09:02Z source: APNIC rpki-ov-state: valid route: 103.163.247.0/24 descr: Optimus Technologies descr: DBI Building, Level-04, 105 Shukrabad, Mirpur Road origin: AS141988 mnt-by: MAINT-OPTIMUS-BD last-modified: 2021-03-15T11:09:11Z source: APNIC rpki-ov-state: valid route6: 2001:df6:3180::/48 descr: Optimus Technologies descr: DBI Building, Level-04, 105 Shukrabad, Mirpur Road origin: AS141988 mnt-by: MAINT-OPTIMUS-BD last-modified: 2021-03-15T11:11:29Z source: APNIC rpki-ov-state: valid