These entries are queried from radb.net using whois, you can try my project getting these.
:AS-DTAG as-set: AS-DTAG descr: AS supported by Deutsche Telekom - old AS set members: AS3320:AS-DTAG # we now maintain this AS set instead of AS-DTAG tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: DTAG-RR created: 2002-06-27T10:32:34Z last-modified: 2020-12-11T15:33:35Z 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: ****************************