These entries are queried from radb.net using whois, you can try my project getting these.
:AS394769 route: 141.216.0.0/16 descr: ADDED FOR - AS394769 origin: AS394769 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20151229 source: LEVEL3 rpki-ov-state: valid route: 141.216.0.0/16 descr: University of Michigan - Flint origin: AS394769 mnt-by: MAINT-AS237 changed: ljb [at] merit.edu 20160908 source: RADB last-modified: 2023-11-13T15:49:51Z rpki-ov-state: valid