These entries are queried from radb.net using whois, you can try my project getting these.
:AS-REGIONETZ as-set: AS-REGIONETZ descr: REGIONETZ.net members: AS203293 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: de-regionetznet-1-mnt created: 2016-07-28T17:55:40Z last-modified: 2021-10-18T15:52:37Z 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: ****************************