These entries are queried from radb.net using whois, you can try my project getting these.
:AS19928 route: 204.83.62.0/24 descr: Peer1 Route Object origin: AS19928 mnt-by: MAINT-AS13768 changed: noc [at] peer1.com 20150206 #22:35:16Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: valid route: 204.83.62.0/24 descr: Interactive Tracking Systems origin: AS19928 mnt-by: MAINT-AS803 changed: config [at] in.bell.ca 20081106 source: BELL rpki-ov-state: valid