These entries are queried from radb.net using whois, you can try my project getting these.
:AS18515 route: 129.107.0.0/16 descr: University of Texas at Arlington origin: AS18515 notify: network [at] uta.edu mnt-by: MAINT-AS18515 changed: caldwell [at] uta.edu 20011205 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fd0f::/36 origin: AS18515 descr: University of Texas at Arlington mnt-by: MAINT-AS16905 changed: david.nichols [at] tx-learn.net 20220105 #21:47:56Z source: RADB last-modified: 2023-11-13T16:09:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source