These entries are queried from radb.net using whois, you can try my project getting these.
:AS140228 route: 103.148.212.0/24 origin: AS140228 descr: Red Data (Pvt.) Limited House 5/A, Road 2, Lane 3 Block G, Halishahar Housing Estate Halishahar mnt-by: MAINT-RDL-BD last-modified: 2023-07-15T07:43:02Z source: APNIC rpki-ov-state: valid route: 103.148.213.0/24 origin: AS140228 descr: Red Data (Pvt.) Limited House 5/A, Road 2, Lane 3 Block G, Halishahar Housing Estate Halishahar mnt-by: MAINT-RDL-BD last-modified: 2023-07-15T07:43:03Z source: APNIC rpki-ov-state: valid