These entries are queried from radb.net using whois, you can try my project getting these.
:AS264047 route: 143.137.220.0/22 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: AS264047 mnt-by: MAINT-AS14840 changed: gacosta [at] commcorp.com.br 20200721 source: RADB last-modified: 2023-11-13T16:01:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.220.0/22 descr: Block IPv4 /22-FOX NET TELECOM ISP origin: AS264047 mnt-by: MAINT-AS264047 changed: noc [at] foxnettelecom.net.br 20200704 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.220.0/24 descr: Angola Cables proxy-registered route object for customer AS264047 origin: AS264047 remarks: *********************************************** remarks: This object is for *AS264047* customer routes remarks: which is being exported from this source AS. remarks: remarks: This route object was create because no existing remarks: route object with the same sources was found, and remarks: since some Angola Cables peers filter based on remarks: these objects these routes may be rejected if remarks: this object is not created. remarks: remarks: Please contact peering [at] angolacables.co.ao if you remarks: have any questions regarding this object. remarks: *********************************************** mnt-by: MAINT-AS37468 changed: humberto.galiza [at] angolacables.co.ao 20180928 #23:38:34Z source: RADB last-modified: 2023-11-13T15:54:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.221.0/24 descr: Angola Cables proxy-registered route object for customer AS264047 origin: AS264047 remarks: *********************************************** remarks: This object is for *AS264047* customer routes remarks: which is being exported from this source AS. remarks: remarks: This route object was create because no existing remarks: route object with the same sources was found, and remarks: since some Angola Cables peers filter based on remarks: these objects these routes may be rejected if remarks: this object is not created. remarks: remarks: Please contact peering [at] angolacables.co.ao if you remarks: have any questions regarding this object. remarks: *********************************************** mnt-by: MAINT-AS37468 changed: humberto.galiza [at] angolacables.co.ao 20180928 #23:38:34Z source: RADB last-modified: 2023-11-13T15:54:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.137.222.0/24 descr: CLARO S.A. Customer origin: AS264047 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 route: 143.137.223.0/24 descr: Block IPv4 /24-FOX NET TELECOM ISP origin: AS264047 mnt-by: MAINT-AS264047 changed: noc [at] foxnettelecom.net.br 20230719 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:29f4::/32 descr: Block IPv6 - ISP FOX NET TELECOM origin: AS264047 mnt-by: MAINT-AS264047 changed: noc [at] foxnettelecom.net.br 20200704 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:29f4::/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: AS264047 mnt-by: MAINT-AS14840 changed: gacosta [at] commcorp.com.br 20200721 source: RADB last-modified: 2023-11-13T16:01:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:29f4:400::/38 descr: ipv6-Cruz/CE-BR(FOX NET TELECOM) origin: AS264047 mnt-by: MAINT-AS264047 changed: noc [at] foxnettelecom.net.br 20200822 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:29f4:400::/38 descr: CLARO S.A. Customer origin: AS264047 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