These entries are queried from radb.net using whois, you can try my project getting these.
:AS52729 route: 177.84.216.0/21 descr: AS52729 origin: AS52729 mnt-by: MAINT-AS52965 changed: rodrigo [at] 1telecom.com.br 20141105 #18:15:45Z source: RADB last-modified: 2023-11-13T15:46:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.84.216.0/22 origin: AS52729 descr: BrNet Informatica mnt-by: MAINT-AS53087 changed: noc [at] tely.com.br 20200320 #11:37:42Z source: RADB last-modified: 2023-11-13T16:00:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.84.220.0/22 origin: AS52729 descr: BrNet Informatica mnt-by: MAINT-AS53087 changed: noc [at] tely.com.br 20200320 #11:42:05Z source: RADB last-modified: 2023-11-13T16:00:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:c9c::/32 origin: AS52729 descr: CUSTOMER BrNet Informatica mnt-by: MAINT-AS28598 changed: cassio.passos [at] mobtelecom.com.br 20190927 #13:35:42Z source: RADB last-modified: 2023-11-13T16:12:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source