These entries are queried from radb.net using whois, you can try my project getting these.
:AS139632 route: 103.142.185.0/24 origin: AS139632 descr: Md. Shafiqul Islam 134, Paikpara, Mirpur, Dhaka mnt-by: MAINT-MIRPURNET-BD last-modified: 2019-09-06T08:42:43Z source: APNIC rpki-ov-state: valid route6: 2001:df1:4e80::/48 origin: AS139632 descr: Md. Shafiqul Islam 134, Paikpara, Mirpur, Dhaka mnt-by: MAINT-MIRPURNET-BD last-modified: 2019-09-14T10:26:04Z source: APNIC rpki-ov-state: valid