These entries are queried from radb.net using whois, you can try my project getting these.
:AS-SDK as-set: as-sdk descr: SDK Ltd. admin-c: DUMY-RIPE tech-c: DUMY-RIPE descr: SDK AS41475 members: AS41475 descr: Electron AS50911 members: AS50911 descr: Newcontact AS58084 members: AS58084 descr: Diasoft members: AS202985 descr: BIZZTECH-AS members: AS25397 mnt-by: SDK-MNT created: 2010-05-11T09:47:18Z last-modified: 2019-09-15T18:55:23Z 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: ****************************