These entries are queried from radb.net using whois, you can try my project getting these.
:AS-FLAGMAN as-set: AS-FLAGMAN descr: Flagman AS list members: AS48045 members: AS197847 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: FLAGMAN-MNT created: 2011-02-01T07:02:19Z last-modified: 2023-07-12T12:48:08Z 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: ****************************