These entries are queried from radb.net using whois, you can try my project getting these.
:AS-KTCZ-NET as-set: AS-KTCZ-NET descr: KTCZ AS-SET members: AS49101 members: AS51731 members: AS51331 members: AS211274 members: AS42422 members: AS211274 members: AS49244 members: AS49244 members: AS51449 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: MNT-KTCT mnt-lower: MNT-KTCT created: 2011-07-12T21:04:40Z last-modified: 2023-06-28T23:37:29Z 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: ****************************