These entries are queried from radb.net using whois, you can try my project getting these.
:AS140502 route: 103.150.6.0/23 origin: AS140502 descr: Hasibur Rahman 55, KDA Avenue, mnt-by: MAINT-BAHANNO-BD last-modified: 2021-04-17T07:00:07Z source: APNIC rpki-ov-state: valid route: 103.150.6.0/24 origin: AS140502 descr: Hasibur Rahman 55, KDA Avenue, mnt-by: MAINT-BAHANNO-BD last-modified: 2020-04-06T06:06:52Z country: BD source: APNIC rpki-ov-state: valid route: 103.150.7.0/24 origin: AS140502 descr: Hasibur Rahman 55, KDA Avenue, mnt-by: MAINT-BAHANNO-BD last-modified: 2020-04-06T06:07:12Z country: BD source: APNIC rpki-ov-state: valid route6: 2001:df3:4c80::/48 origin: AS140502 descr: Hasibur Rahman 55, KDA Avenue, mnt-by: MAINT-BAHANNO-BD last-modified: 2020-04-04T12:02:38Z source: APNIC rpki-ov-state: valid