These entries are queried from radb.net using whois, you can try my project getting these.
:AS263983 route: 138.255.204.0/22 origin: AS263983 descr: ITX-UNIFIQUE mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20190402 #15:09:57Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:28d4::/32 origin: AS263983 descr: ITX-UNIFIQUE mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20190402 #15:19:22Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source