These entries are queried from radb.net using whois, you can try my project getting these.
:AS148794 route: 103.174.224.0/24 origin: AS148794 descr: Md Nizam 1 no boro bazar, Ershadnagar, Tongi mnt-by: MAINT-NSNETCONNECTION-BD last-modified: 2021-11-17T10:17:33Z source: APNIC rpki-ov-state: valid