These entries are queried from radb.net using whois, you can try my project getting these.
:AS28209 route: 177.70.0.0/19 origin: AS28209 descr: public cloud ip block remarks: Under Bare Metal Cloud. https://under.com.br mnt-by: MAINT-AS28209 changed: hostmaster [at] under.com.br 20210608 #2 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 179.127.0.0/19 origin: AS28209 descr: public cloud ip block remarks: Under Bare Metal Cloud. https://under.com.br mnt-by: MAINT-AS28209 changed: hostmaster [at] under.com.br 20210608 #2 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 189.113.0.0/20 origin: AS28209 descr: public cloud ip block remarks: Under Bare Metal Cloud. https://under.com.br mnt-by: MAINT-AS28209 changed: hostmaster [at] under.com.br 20210608 #2 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:1070::/32 descr: Solicitado por IPv6 Internet. Feb 23 2015 origin: AS28209 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20150223 #16:02:21Z source: RADB last-modified: 2023-11-13T15:47:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:1070::/32 origin: AS28209 descr: public cloud ip block remarks: Under Bare Metal Cloud. https://under.com.br mnt-by: MAINT-AS28209 changed: hostmaster [at] under.com.br 20210608 #2 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source