These entries are queried from radb.net using whois, you can try my project getting these.
:AS270938 route: 186.26.92.0/22 origin: AS270938 descr: NB TELECOM proxy-registered route object for customer AS270938 mnt-by: MAINT-AS28338 changed: noc [at] nbtelecom.com.br 20210112 #13:28:02Z source: RADB last-modified: 2023-11-13T16:03:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:73cc::/32 origin: AS270938 descr: CUSTOM LINKFULL mnt-by: MAINT-AS263047 changed: juliard [at] linkfull.com.br 20210601 #12:09:59Z source: RADB last-modified: 2023-11-13T16:05:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source