These entries are queried from radb.net using whois, you can try my project getting these.
:AS139858 route: 103.146.84.0/23 origin: AS139858 descr: Md Noman 22, MADAN MOHAN BASAK ROAD (TIPU SULTAN ROAD) mnt-by: MAINT-ALIFACYBERCAFE-BD last-modified: 2019-12-14T09:11:51Z source: APNIC rpki-ov-state: valid route: 103.146.84.0/24 origin: AS139858 descr: Md Noman 22, MADAN MOHAN BASAK ROAD (TIPU SULTAN ROAD) mnt-by: MAINT-ALIFACYBERCAFE-BD last-modified: 2019-12-14T09:11:53Z source: APNIC rpki-ov-state: valid route: 103.146.85.0/24 origin: AS139858 descr: Md Noman 22, MADAN MOHAN BASAK ROAD (TIPU SULTAN ROAD) mnt-by: MAINT-ALIFACYBERCAFE-BD last-modified: 2019-12-14T09:11:54Z source: APNIC rpki-ov-state: valid route6: 2001:df2:5580::/48 origin: AS139858 descr: Md Noman 22, MADAN MOHAN BASAK ROAD (TIPU SULTAN ROAD) mnt-by: MAINT-ALIFACYBERCAFE-BD last-modified: 2019-12-14T09:17:19Z source: APNIC rpki-ov-state: valid