These entries are queried from radb.net using whois, you can try my project getting these.
:AS271433 route: 181.233.12.0/22 origin: AS271433 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: condinhorccrn [at] gmail.com mnt-by: MAINT-AS271433 source: TC last-modified: 2022-07-18T17:57:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 181.233.12.0/22 origin: AS271433 descr: AS271433 mnt-by: MAINT-AS52965 changed: rodrigo [at] 1telecom.com.br 20230512 #11:21:41Z source: RADB last-modified: 2023-11-13T16:17:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:7b74::/32 origin: AS271433 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: condinhorccrn [at] gmail.com mnt-by: MAINT-AS271433 source: TC last-modified: 2022-07-18T17:57:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:7b74::/32 origin: AS271433 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 20210211 #20:45:33Z source: RADB last-modified: 2023-11-13T16:03:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source