These entries are queried from radb.net using whois, you can try my project getting these.
:AS-ITKM as-set: AS-ITKM descr: ITKM and customers AS list members: AS48149 members: AS61380 members: AS216218 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: MNT-ITKM mnt-by: ITKM-MNT created: 2017-02-13T12:55:08Z last-modified: 2023-10-03T10:38:10Z 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: ****************************