These entries are queried from radb.net using whois, you can try my project getting these.
:AS23193 route: 162.51.0.0/16 descr: Community College of Allegheny County origin: AS23193 mnt-by: MAINT-AS27506 changed: rhinst [at] lightower.com 20160902 #18:57:08Z source: RADB last-modified: 2023-11-13T15:49:51Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 162.51.0.0/16 origin: AS23193 descr: Community College of Allegheny County 800 Allegheny Ave. Pittsburgh PA 15233 United States admin-c: CDM27-ARIN tech-c: CDM27-ARIN mnt-by: MNT-CCAC-Z created: 2023-07-17T21:10:08Z last-modified: 2023-07-17T21:10:08Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source