These entries are queried from radb.net using whois, you can try my project getting these.
:AS135019 route: 103.23.255.0/24 origin: AS135019 descr: amarnet_system mnt-by: MAINT-JPNETWORKBD-BD last-modified: 2024-03-29T09:47:13Z source: APNIC rpki-ov-state: valid route: 103.151.58.0/24 origin: AS135019 descr: Arifa KA-41/6,Arima Tower, Kalachadpur,Gulshan,Dhaka-1212 mnt-by: MAINT-NDCI-BD last-modified: 2024-02-06T17:59:18Z source: APNIC rpki-ov-state: valid route: 103.151.59.0/24 origin: AS135019 descr: Arifa KA-41/6,Arima Tower, Kalachadpur,Gulshan,Dhaka-1212 mnt-by: MAINT-NDCI-BD last-modified: 2024-03-05T18:03:34Z source: APNIC rpki-ov-state: valid route6: 2400:b140::/32 origin: AS135019 descr: Ka - 42/2, (3rd Floor), Joar Shahara, Lichubagan, Vatara, Dhaka-1229 mnt-by: MAINT-AMARNETSYSTEM-BD last-modified: 2019-06-24T09:38:04Z source: APNIC rpki-ov-state: valid