These entries are queried from radb.net using whois, you can try my project getting these.
:AS61912 route: 177.152.52.0/22 origin: AS61912 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: gersonpmsf [at] yahoo.com.br mnt-by: MAINT-AS61912 source: TC last-modified: 2022-01-04T03:39:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.152.52.0/22 descr: Solicitado por nuestro cliente NT Brasil tecnologia para UIAILINK. Mayo 08 2014. origin: AS61912 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20140509 #21:39:50Z source: RADB last-modified: 2023-11-13T15:46:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:16b8::/32 descr: Solicitado por nuestro cliente NT BRASIL para UIALINK. Mayo 8 2014. origin: AS61912 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20140509 #22:31:47Z source: RADB last-modified: 2023-11-13T15:46:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:16b8::/32 origin: AS61912 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: gersonpmsf [at] yahoo.com.br mnt-by: MAINT-AS61912 source: TC last-modified: 2022-01-04T03:39:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source