These entries are queried from radb.net using whois, you can try my project getting these.
:AS-DUNA as-set: AS-DUNA tech-c: DUMY-RIPE admin-c: DUMY-RIPE descr: DUNA ASes members: AS44628 members: AS44921 members: AS201260 members: AS48696 members: AS-LINK mnt-by: DUNA-MNT created: 2016-05-29T17:28:33Z last-modified: 2020-12-13T09:09:09Z 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: ****************************