These entries are queried from radb.net using whois, you can try my project getting these.
:AS18791 route: 74.200.134.0/24 descr: TCU via LEARN origin: AS18791 mnt-by: MAINT-AS16905 changed: byron.hicks [at] tx-learn.net 20180406 #13:22:36Z source: RADB last-modified: 2023-11-13T15:53:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 138.237.0.0/16 descr: Texas Christian University 2200 S. University Dr. Fort Worth, TX 76129 origin: AS18791 notify: j.mayne [at] tcu.edu mnt-by: MAINT-TCU changed: j.mayne [at] tcu.edu 20010912 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source