These entries are queried from radb.net using whois, you can try my project getting these.
:AS59547 route: 151.248.48.0/21 descr: SYNTIGO_BLOCK01 origin: AS59547 mnt-by: Eurofiber-MNT created: 2012-09-10T14:58:43Z last-modified: 2022-08-16T12:52:26Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source