These entries are queried from radb.net using whois, you can try my project getting these.
:AS28661 route: 187.33.64.0/19 origin: AS28661 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: tecnico-hl [at] hotlink.com.br mnt-by: MAINT-AS28661 source: TC last-modified: 2021-05-19T19:22:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 187.33.64.0/19 descr: AS28661 origin: AS28661 mnt-by: MAINT-AS52965 changed: rodrigo [at] 1telecom.com.br 20141009 #11:07:52Z source: RADB last-modified: 2023-11-13T15:46:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.1.0.0/19 origin: AS28661 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: tecnico-hl [at] hotlink.com.br mnt-by: MAINT-AS28661 source: TC last-modified: 2021-05-19T19:22:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.1.0.0/19 descr: AS28661 origin: AS28661 mnt-by: MAINT-AS52965 changed: rodrigo [at] 1telecom.com.br 20141009 #11:07:25Z source: RADB last-modified: 2023-11-13T15:46:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2070::/32 origin: AS28661 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: tecnico-hl [at] hotlink.com.br mnt-by: MAINT-AS28661 source: TC last-modified: 2021-05-19T19:22:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2070::/32 descr: AS28661 origin: AS28661 mnt-by: MAINT-AS52965 changed: rodrigo [at] 1telecom.com.br 20141201 #11:24:05Z source: RADB last-modified: 2023-11-13T15:47:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source