These entries are queried from radb.net using whois, you can try my project getting these.
:AS-BRZ as-set: AS-BRZ descr: BUNDESRECHENZENTRUM GMBH AS-SET members: AS8692 members: AS6883 members: AS16099 admin-c: DUMY-RIPE tech-c: DUMY-RIPE mnt-by: BRZ-MNT created: 2007-07-25T13:13:48Z last-modified: 2023-07-04T12:11:45Z 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: ****************************