These entries are queried from radb.net using whois, you can try my project getting these.
:AS52990 route: 177.53.16.0/21 origin: AS52990 remarks: Auto-created by TC IRR from NIC.br and RIPE RIS data notify: rabih [at] vonex.com.br mnt-by: MAINT-AS52990 source: TC last-modified: 2022-08-03T19:15:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.53.16.0/21 descr: Bloco de Ip´s cliente "Host/Nexus" criado pela equipe Durand do Brazil origin: AS52990 admin-c: Eduardo Fumes Parajo tech-c: Epafras Rezende Schaden mnt-by: MAINT-AS22356 changed: eduardo [at] durand.com.br 20150109 #15:53:19Z source: RADB last-modified: 2023-11-13T15:47:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.53.16.0/24 descr: CLARO S.A. Customer origin: AS52990 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210601 source: RADB last-modified: 2023-11-13T16:05:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.53.17.0/24 descr: CLARO S.A. Customer origin: AS52990 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210422 source: RADB last-modified: 2023-11-13T16:05:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.53.18.0/24 descr: CLARO S.A. Customer origin: AS52990 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210601 source: RADB last-modified: 2023-11-13T16:05:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.53.20.0/24 descr: CLARO S.A. Customer origin: AS52990 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210406 source: RADB last-modified: 2023-11-13T16:05:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.53.21.0/24 descr: CLARO S.A. Customer origin: AS52990 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20210601 source: RADB last-modified: 2023-11-13T16:05:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.53.22.0/24 descr: CLARO S.A. Customer origin: AS52990 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230404 source: RADB last-modified: 2023-11-13T16:15:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source