These entries are queried from radb.net using whois, you can try my project getting these.
:AS271541 route: 181.232.250.0/23 descr: HAVAN S.A origin: AS271541 mnt-by: MAINT-AS271541 changed: giovani.testoni [at] havan.com.br 20220311 source: ALTDB rpki-ov-state: valid route: 181.232.250.0/24 descr: HAVAN S.A origin: AS271541 mnt-by: MAINT-AS271541 changed: giovani.testoni [at] havan.com.br 20220311 source: ALTDB rpki-ov-state: valid route: 181.232.251.0/24 descr: HAVAN S.A origin: AS271541 mnt-by: MAINT-AS271541 changed: giovani.testoni [at] havan.com.br 20220311 source: ALTDB rpki-ov-state: valid route6: 2801:80:3e70::/47 descr: Unifique Telecomunicacoes SA customer proxy route object origin: AS271541 remarks: AS info: whois -h whois.lacnic.net AS271541 remarks: ************************************************************ remarks: This is a Unifique's customer proxy route object that was remarks: created because no existing route object with the same remarks: origin was found. remarks: ************************************************************ remarks: Please contact bgp [at] redeunifique.com.br if you remarks: have any questions regarding this object. remarks: ************************************************************ mnt-by: MAINT-AS28343 changed: bgp [at] redeunifique.com.br 20210806 source: RADB last-modified: 2023-11-13T16:08:02Z rpki-ov-state: valid route6: 2801:80:3e70::/47 descr: HAVAN S.A origin: AS271541 mnt-by: MAINT-AS271541 changed: giovani.testoni [at] havan.com.br 20220311 source: ALTDB rpki-ov-state: valid