These entries are queried from radb.net using whois, you can try my project getting these.
:AS52815 route: 177.72.56.0/21 descr: PROXY FOR OUR CUSTUMER origin: AS52815 mnt-by: MAINT-AS263558 changed: jetelecom [at] jetelecom.com.br 20210118 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.72.56.0/21 descr: This is a Commcorp Telecom customer proxy route object that was created because no existing route object with the same origin was found. Please contact noc [at] commcorp.com.br if you have any questions regarding this object. origin: AS52815 mnt-by: MAINT-AS14840 changed: gacosta [at] commcorp.com.br 20151028 #11:12:00Z source: RADB last-modified: 2023-11-13T15:48:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.72.60.0/22 descr: CLARO S.A. Customer origin: AS52815 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20190807 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.72.61.0/24 descr: CLARO S.A. Customer origin: AS52815 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20190807 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.72.62.0/24 descr: CLARO S.A. Customer origin: AS52815 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20190807 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.72.63.0/24 descr: CLARO S.A. Customer origin: AS52815 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20190807 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:bb8::/32 descr: This is a Commcorp Telecom customer proxy route object that was created because no existing route object with the same origin was found. Please contact noc [at] commcorp.com.br if you have any questions regarding this object. origin: AS52815 mnt-by: MAINT-AS14840 changed: gacosta [at] commcorp.com.br 20160830 #16:51:04Z source: RADB last-modified: 2023-11-13T15:49:49Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:bb8::/32 descr: PROXY FOR OUR COSTUMER CONE origin: AS52815 mnt-by: MAINT-AS263558 changed: jetelecom [at] jetelecom.com.br 20210118 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source