These entries are queried from radb.net using whois, you can try my project getting these.
:AS263523 route: 191.253.16.0/22 origin: AS263523 descr: This is a BR.Digital customer proxy route object that was created because no existing route object with the same origin was found. Please contact bgp [at] br.digital if you have any questions regarding this object. mnt-by: MAINT-AS14840 changed: gacosta [at] br.digital 20220902 #18:40:03Z source: RADB last-modified: 2023-11-13T16:12:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:133c::/32 origin: AS263523 descr: Route object created for customer AS263523 mnt-by: MAINT-AS61568 notify: noc [at] alootelecom.com.br changed: noc [at] alootelecom.com.br 20200624 #18:56:59Z source: RADB last-modified: 2023-11-13T16:12:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:47e8::/32 descr: CLARO S.A. Customer origin: AS263523 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210913 source: RADB last-modified: 2023-11-13T16:08:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source