These entries are queried from radb.net using whois, you can try my project getting these.
:AS17733 route: 202.161.32.0/19 origin: AS17733 descr: Singapore Management University Administration Building 81 Victoria Street Integrated Information Technology Services Level 11 mnt-by: MAINT-SG-SMUCIT last-modified: 2019-08-28T04:58:25Z source: APNIC rpki-ov-state: valid route: 202.161.32.0/20 origin: AS17733 descr: Singapore Management University Administration Building 81 Victoria Street Integrated Information Technology Services Level 11 mnt-by: MAINT-SG-SMUCIT last-modified: 2019-08-28T04:59:58Z source: APNIC rpki-ov-state: valid route: 202.161.48.0/20 origin: AS17733 descr: Singapore Management University Administration Building 81 Victoria Street Integrated Information Technology Services Level 11 mnt-by: MAINT-SG-SMUCIT last-modified: 2019-08-28T04:59:58Z source: APNIC rpki-ov-state: valid