These entries are queried from radb.net using whois, you can try my project getting these.
:AS-DOMAINMASTER as-set: AS-DOMAINMASTER descr: DomainMaster AS macro descr: ASes served and routed by DomainMaster members: AS20976 members: AS21238 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: DOMAINMASTER-NOC created: 2002-09-07T02:21:02Z last-modified: 2002-09-07T02:21:02Z 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: ****************************