These entries are queried from radb.net using whois, you can try my project getting these.
:AS-NET21 as-set: AS-NET21 descr: NPP SET`-XXI and customers members: AS25511 members: AS44269 members: AS58235 members: AS200778 members: AS41845 admin-c: DUMY-RIPE tech-c: DUMY-RIPE mnt-by: NET21-MNT created: 2005-04-14T08:41:20Z last-modified: 2017-03-17T09:14:38Z 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: ****************************