These entries are queried from radb.net using whois, you can try my project getting these.
:AS263990 route: 143.0.16.0/22 descr: FASTNET-IXSP-CUTOMER origin: AS263990 mnt-by: MAINT-AS263047 changed: eng [at] linkfull.com.br 20161203 #19:23:43Z source: RADB last-modified: 2023-11-13T15:58:51Z rpki-ov-state: valid route: 143.0.16.0/22 origin: AS263990 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: anteriojunior [at] hotmail.com mnt-by: MAINT-AS263990 source: TC last-modified: 2022-07-01T19:25:36Z rpki-ov-state: valid route: 143.0.16.0/23 origin: AS263990 descr: CUSTOMER-STEELWEB mnt-by: MAINT-AS265187 changed: thiago [at] steelwebtelecom.com.br 20210401 #16:35:39Z source: RADB last-modified: 2024-01-22T22:00:06Z rpki-ov-state: valid route: 143.0.16.0/24 origin: AS263990 descr: CUSTOMER-STEELWEB mnt-by: MAINT-AS265187 changed: thiago [at] steelwebtelecom.com.br 20210401 #16:33:25Z source: RADB last-modified: 2024-01-22T22:00:06Z rpki-ov-state: valid route: 143.0.17.0/24 origin: AS263990 descr: CUSTOMER-STEELWEB mnt-by: MAINT-AS265187 changed: thiago [at] steelwebtelecom.com.br 20210401 #16:33:59Z source: RADB last-modified: 2024-01-22T22:00:06Z rpki-ov-state: valid route: 143.0.18.0/23 descr: CLARO S.A. Customer origin: AS263990 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20200828 source: RADB last-modified: 2023-11-13T16:01:35Z rpki-ov-state: valid route: 143.0.18.0/24 origin: AS263990 descr: CUSTOMER-STEELWEB mnt-by: MAINT-AS265187 changed: thiago [at] steelwebtelecom.com.br 20210401 #16:34:35Z source: RADB last-modified: 2024-01-22T22:00:06Z rpki-ov-state: valid route: 143.0.19.0/24 origin: AS263990 descr: CUSTOMER-STEELWEB mnt-by: MAINT-AS265187 changed: thiago [at] steelwebtelecom.com.br 20210401 #16:35:08Z source: RADB last-modified: 2024-01-22T22:00:06Z rpki-ov-state: valid route6: 2804:28f8::/32 origin: AS263990 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: anteriojunior [at] hotmail.com mnt-by: MAINT-AS263990 source: TC last-modified: 2022-07-01T19:25:36Z rpki-ov-state: valid route6: 2804:28f8::/32 descr: ITX-DB3 origin: AS263990 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20180904 #18:37:13Z source: RADB last-modified: 2023-11-13T15:54:36Z rpki-ov-state: valid