These entries are queried from radb.net using whois, you can try my project getting these.
:AS52987 route: 177.52.224.0/21 origin: AS52987 descr: This is a Commcorp Telecom customer proxy route object that was created because no existing route object with the same origin was found. Please contact noc [at] commcorp.com.br if you have any questions regarding this object. mnt-by: MAINT-AS14840 changed: gacosta [at] commcorp.com.br 20190311 #14:15:46Z source: RADB last-modified: 2023-11-13T15:55:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:494::/32 origin: AS52987 descr: This is a Commcorp Telecom customer proxy route object that was created because no existing route object with the same origin was found. Please contact noc [at] commcorp.com.br if you have any questions regarding this object. mnt-by: MAINT-AS14840 changed: gacosta [at] commcorp.com.br 20190311 #14:16:23Z source: RADB last-modified: 2023-11-13T15:55:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source