These entries are queried from radb.net using whois, you can try my project getting these.
:AS270512 route: 187.49.184.0/22 origin: AS270512 descr: CUSTOM_LINKFULL mnt-by: MAINT-AS263047 changed: juliard [at] linkfull.com.br 20210517 #12:28:37Z source: RADB last-modified: 2023-11-13T16:05:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:6d18::/32 origin: AS270512 descr: CUSTOM LINKFULL mnt-by: MAINT-AS263047 changed: juliard [at] linkfull.com.br 20210517 #12:28:49Z source: RADB last-modified: 2023-11-13T16:05:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source