These entries are queried from radb.net using whois, you can try my project getting these.
:AS149777 route: 103.186.50.0/23 origin: AS149777 descr: Liton Kumar Datta Jashore-Khulna Main Road, Daulatpur, Khulna mnt-by: MAINT-STAR6-BD last-modified: 2023-01-17T08:10:58Z source: APNIC rpki-ov-state: valid route: 103.186.50.0/24 origin: AS149777 descr: Liton Kumar Datta Jashore-Khulna Main Road, Daulatpur, Khulna mnt-by: MAINT-STAR6-BD last-modified: 2022-05-16T11:29:23Z source: APNIC rpki-ov-state: valid route: 103.186.51.0/24 origin: AS149777 descr: Liton Kumar Datta Jashore-Khulna Main Road, Daulatpur, Khulna mnt-by: MAINT-STAR6-BD last-modified: 2022-05-16T11:32:08Z source: APNIC rpki-ov-state: valid route6: 2400:6e20::/32 origin: AS149777 descr: Liton Kumar Datta Jashore-Khulna Main Road, Daulatpur, Khulna mnt-by: MAINT-STAR6-BD last-modified: 2022-05-16T11:34:14Z source: APNIC rpki-ov-state: valid