These entries are queried from radb.net using whois, you can try my project getting these.
:AS262817 route: 138.219.148.0/22 descr: G8 Customer Proxy Route origin: AS262817 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200212 source: RADB route: 186.250.120.0/22 descr: G8 Customer Proxy Route origin: AS262817 mnt-by: MAINT-AS28329 changed: no-reply [at] g8.net.br 20200212 source: RADB route: 138.219.148.0/23 descr: CLARO S.A. Customer origin: AS262817 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20200520 source: RADB route: 138.219.150.0/23 descr: CLARO S.A. Customer origin: AS262817 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20200520 source: RADB route: 186.250.120.0/23 descr: CLARO S.A. Customer origin: AS262817 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20200520 source: RADB route: 186.250.122.0/23 descr: CLARO S.A. Customer origin: AS262817 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20200520 source: RADB route6: 2804:27e0::/32 descr: TUDDOINTERNET origin: AS262817 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20181221 #21:42:08Z source: RADB