These entries are queried from radb.net using whois, you can try my project getting these.
:AS-SORTOS as-set: AS-SORTOS tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: GARASTEL-MNT mnt-by: JOHN-MNT created: 2017-02-02T14:24:19Z last-modified: 2018-09-20T10:55:34Z source: RIPE descr: SORTOS AS-list members: AS51547 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: ****************************