These entries are queried from radb.net using whois, you can try my project getting these.
:AS-PB-SZ as-set: AS-PB-SZ descr: Members through AS57662 members: AS57662 members: AS44067 tech-c: DUMY-RIPE admin-c: DUMY-RIPE notify: noc [at] qik.com.ru mnt-by: PB-SZ-MNT created: 2011-12-30T06:48:02Z last-modified: 2019-03-07T08:12:51Z 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: ****************************