These entries are queried from radb.net using whois, you can try my project getting these.
:AS-ITMEDIA-WORLD as-set: AS-ITMEDIA-WORLD descr: Armnet customers members: AS34312 members: AS41501 members: AS20971 members: AS24726 members: AS-UKRBIT admin-c: DUMY-RIPE tech-c: DUMY-RIPE mnt-by: ARM-MNT created: 2007-11-22T08:23:40Z last-modified: 2010-01-20T13:02:19Z 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: ****************************