These entries are queried from radb.net using whois, you can try my project getting these.
:AS139223 route: 103.139.253.0/24 descr: NTECH COMMUNICATION origin: AS139223 mnt-by: MAINT-BD-NTECHCOMMUNICATION last-modified: 2019-07-20T14:12:37Z source: APNIC rpki-ov-state: valid route: 103.175.127.0/24 origin: AS139223 descr: MD. FAZLUL KARIM KHAN House#02, Road#13, J & Mansion (4th Floor), Dhanmondi R/A mnt-by: MAINT-BD-NTECHCOMMUNICATION last-modified: 2022-09-18T14:25:59Z source: APNIC rpki-ov-state: valid