These entries are queried from radb.net using whois, you can try my project getting these.
:AS28621 route: 131.0.184.0/22 descr: Proxy Route For ASN28621 origin: AS28621 mnt-by: MAINT-AS263949 changed: edenilson [at] deztelecom.net.br 20170208 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 131.0.184.0/22 descr: ITX_GRUPO G1 origin: AS28621 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20180607 #13:54:25Z source: RADB last-modified: 2023-11-13T15:53:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.128.236.0/22 descr: Proxy Route For ASN28621 origin: AS28621 mnt-by: MAINT-AS263949 changed: edenilson [at] deztelecom.net.br 20170208 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 177.128.236.0/22 descr: MHNET origin: AS28621 mnt-by: MAINT-AS18678 changed: noc [at] internexa.com 20170609 #19:53:24Z source: RADB last-modified: 2023-11-13T15:51:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:1ad0::/32 descr: Rota Cliente AS28621 Criado por Durand origin: AS28621 admin-c: Eduardo Fumes Parajo tech-c: Epafras Rezende Schaden mnt-by: MAINT-AS22356 changed: epafras [at] durand.com.br 20140728 #18:44:28Z source: RADB last-modified: 2023-11-13T15:46:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source