These entries are queried from radb.net using whois, you can try my project getting these.
:AS263992 route: 143.0.36.0/22 descr: Proxy-registered route object remarks: --------------------------------- remarks: For SECURITY issues, please send messages to remarks: origin AS administrator remarks: (e.g. whois -h whois.registro.br AS263992) remarks: --------------------------------- remarks: This route is from a Oi customer which remarks: is being exported under origin AS below. remarks: It was created by us because no other remarks: route object with the same origin was found. remarks: --------------------------------- remarks: Please contact BGPOI-RADB if you have any remarks: questions regarding this object. remarks: --------------------------------- origin: AS263992 notify: ip-bgp [at] oi.net.br mnt-by: MAINT-AS8167 changed: ip-bgp [at] oi.net.br 20190903 source: RADB last-modified: 2023-11-13T15:57:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.0.36.0/23 descr: CLARO S.A. Customer origin: AS263992 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230607 source: RADB last-modified: 2023-11-13T16:17:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.0.38.0/23 descr: CLARO S.A. Customer origin: AS263992 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20220126 source: RADB last-modified: 2023-11-13T16:09:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2900::/32 descr: Proxy-registered route object remarks: --------------------------------- remarks: For SECURITY issues, please send messages to remarks: origin AS administrator remarks: (e.g. whois -h whois.registro.br AS263992) remarks: --------------------------------- remarks: This route is from a Oi customer which remarks: is being exported under origin AS below. remarks: It was created by us because no other remarks: route object with the same origin was found. remarks: --------------------------------- remarks: Please contact BGPOI-RADB if you have any remarks: questions regarding this object. remarks: --------------------------------- origin: AS263992 notify: ip-bgp [at] oi.net.br mnt-by: MAINT-AS8167 changed: ip-bgp [at] oi.net.br 20190903 source: RADB last-modified: 2023-11-13T15:57:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2900::/33 descr: CLARO S.A. Customer origin: AS263992 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20240103 source: RADB last-modified: 2024-01-03T14:03:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2900:8000::/33 descr: CLARO S.A. Customer origin: AS263992 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20240103 source: RADB last-modified: 2024-01-03T14:03:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source