These entries are queried from radb.net using whois, you can try my project getting these.
:AS52915 route: 177.23.247.0/24 descr: ITX-SAMM origin: AS52915 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20180221 #19:34:23Z source: RADB last-modified: 2023-11-13T15:53:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2801:80:460::/48 descr: Rota Cliente AS52915 Criado por Durand origin: AS52915 admin-c: Eduardo Fumes Parajo tech-c: Epafras Rezende Schaden mnt-by: MAINT-AS22356 changed: epafras [at] durand.com.br 20140728 #18:59:40Z source: RADB last-modified: 2023-11-13T15:46:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source