These entries are queried from radb.net using whois, you can try my project getting these.
:AS52964 route: 177.38.0.0/21 descr: FJR TELECOMUNICACOES LTDA ME origin: AS52964 mnt-by: MAINT-AS52964 notify: TC-HM-MNT changed: db-admin [at] irr.scw.net.br 20110912 #10:28:34(BRT) source: TC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source