These entries are queried from radb.net using whois, you can try my project getting these.
:AS-CKSOFT as-set: AS-CKSOFT descr: CK Software GmbH, 71126 Gaeufelden, Germany descr: ASNs announced CK Software GmbH members: AS57407 # CK Software GmbH members: AS205469 org: ORG-CSG10-RIPE tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: CKSOFT-MNT mnt-lower: CKSOFT-MNT created: 2011-10-19T15:03:55Z last-modified: 2017-08-16T18:16:21Z 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: ****************************