These entries are queried from radb.net using whois, you can try my project getting these.
:AS139823 route: 103.145.204.0/23 origin: AS139823 descr: Dhrubotech Limited 4th Floor, House # 693, Road # 10, Avenue # 6, Mirpur DOHS. mnt-by: MAINT-DHRUBOTECHLIMITED-BD last-modified: 2023-10-16T04:51:57Z source: APNIC rpki-ov-state: valid route: 103.145.204.0/24 origin: AS139823 descr: Dhrubotech Limited 4th Floor, House # 693, Road # 10, Avenue # 6, Mirpur DOHS. mnt-by: MAINT-DHRUBOTECHLIMITED-BD last-modified: 2023-06-13T01:32:28Z source: APNIC rpki-ov-state: valid route: 103.145.205.0/24 origin: AS139823 descr: Dhrubotech Limited 4th Floor, House # 693, Road # 10, Avenue # 6, Mirpur DOHS. mnt-by: MAINT-DHRUBOTECHLIMITED-BD last-modified: 2023-10-16T04:52:51Z source: APNIC rpki-ov-state: valid