These entries are queried from radb.net using whois, you can try my project getting these.
:AS11678 route: 192.100.51.0/24 descr: Nevada Site Office PO Box 98521 Las Vegas NV 89193 USA origin: AS11678 mnt-by: MAINT-ESNET changed: hostmaster [at] es.net 20120202 #00:08:04Z source: RADB last-modified: 2023-11-13T15:41:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2607:2080::/32 descr: U.S. Department of Energy Nevada Field Office PO Box 98521 NLV-032 Las Vegas, NV 89193, USA origin: AS11678 mnt-by: MAINT-ESNET changed: hostmaster [at] es.net 20181005 #18:27:31Z source: RADB last-modified: 2023-11-13T15:54:57Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source