These entries are queried from radb.net using whois, you can try my project getting these.
:AS271516 route: 181.232.176.0/22 origin: AS271516 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: joao.paulo [at] unafiber.com.br mnt-by: MAINT-AS271516 source: TC last-modified: 2022-07-15T16:45:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 181.232.176.0/22 origin: AS271516 descr: LINKAR to UNAFIBER TELECOM LTDA admin-c: Fabiano Garcia tech-c: Fabiano Garcia mnt-by: MAINT-AS268689 changed: fabianogarcia2005 [at] yahoo.com.br 20211221 #21:35:33Z source: RADB last-modified: 2023-11-13T16:19:04Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:7cc0::/32 origin: AS271516 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: joao.paulo [at] unafiber.com.br mnt-by: MAINT-AS271516 source: TC last-modified: 2022-07-15T16:45:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:7cc0::/32 origin: AS271516 descr: Transit Linkar to UNAFIBER admin-c: Fabiano Garcia tech-c: Fabiano Garcia mnt-by: MAINT-AS268689 changed: fabianogarcia2005 [at] yahoo.com.br 20201217 #19:31:33Z source: RADB last-modified: 2023-11-13T16:19:04Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source