These entries are queried from radb.net using whois, you can try my project getting these.
:AS8303 route: 149.219.0.0/16 descr: Westdeutscher Rundfunk descr: Koeln, DE origin: AS8303 mnt-by: AS8303-MNT created: 1970-01-01T00:00:00Z last-modified: 2001-09-22T09:32:20Z 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: valid