These entries are queried from radb.net using whois, you can try my project getting these.
:AS271090 route: 179.48.144.0/22 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route: 179.48.144.0/22 descr: PROXY FOR OPENX CUSTOMER origin: AS271090 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20200808 remarks: Sat Aug 8 13:26:49 2020 source: RADB last-modified: 2023-11-13T16:01:18Z rpki-ov-state: valid route: 179.48.144.0/23 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route: 179.48.144.0/23 descr: CLARO S.A. Customer origin: AS271090 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20211116 source: RADB last-modified: 2023-11-13T16:08:40Z rpki-ov-state: valid route: 179.48.144.0/24 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route: 179.48.145.0/24 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route: 179.48.146.0/23 descr: CLARO S.A. Customer origin: AS271090 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20211116 source: RADB last-modified: 2023-11-13T16:08:40Z rpki-ov-state: valid route: 179.48.146.0/23 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route: 179.48.146.0/24 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route: 179.48.147.0/24 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route6: 2804:761c::/32 descr: STONE NET LTDA cidr block origin: AS271090 mnt-by: MAINT-AS271090 changed: stone [at] ultra.pro.br 20240417 source: ALTDB rpki-ov-state: valid route6: 2804:761c::/32 descr: PROXY FOR OPENX CUSTOMER origin: AS271090 mnt-by: MAINT-AS263444 notify: registro [at] openx.com.br changed: registro [at] openx.com.br 20200808 remarks: Sat Aug 8 13:25:09 2020 source: RADB last-modified: 2023-11-13T16:01:18Z rpki-ov-state: valid