These entries are queried from radb.net using whois, you can try my project getting these.
:AS53221 route: 186.250.240.0/21 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2021-06-04T20:55:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.240.0/23 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2024-02-19T11:37:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.240.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.241.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.242.0/23 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2024-02-19T11:37:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.242.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.243.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.244.0/23 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2024-02-19T11:37:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.244.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.245.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.246.0/23 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2024-02-19T11:37:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.246.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 186.250.247.0/24 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2022-05-03T12:58:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3cb8::/32 descr: G8 Networks origin: AS53221 mnt-by: MAINT-AS28329 changed: marcio.cavalcante [at] g8.net.br 20180209 source: RADB last-modified: 2023-11-13T15:53:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3cb8::/32 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2021-06-04T21:11:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3cb8:c000::/36 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2021-06-04T21:11:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3cb8:f000::/36 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2021-06-04T21:11:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:3cb8:f000:400::/64 origin: AS53221 notify: nocdf [at] engetronics.com.br mnt-by: MAINT-AS53221 source: TC last-modified: 2021-06-04T21:11:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source