These entries are queried from radb.net using whois, you can try my project getting these.
:AS63159 route: 23.92.144.0/20 descr: Linknet Telecommunications , Inc origin: AS63159 mnt-by: MNT-CANAD-67 changed: junsheng.cao [at] popmall.ca 20181102 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.223.129.0/24 descr: Linknet Telecommunications , Inc origin: AS63159 mnt-by: MNT-CANAD-67 changed: junsheng.cao [at] popmall.ca 20181102 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source