These entries are queried from radb.net using whois, you can try my project getting these.
:AS-PERFTECH-SI as-set: AS-PERFTECH-SI descr: Perftech d.o.o., Slovenia descr: PERFTECH-SLOVENIA and customers members: AS6764 members: AS56695 admin-c: DUMY-RIPE tech-c: DUMY-RIPE mnt-by: PERFTECH-MNT notify: vinko.plavc [at] perftech.si created: 2002-08-07T14:54:55Z last-modified: 2018-04-06T10:59:57Z 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: ****************************