These entries are queried from radb.net using whois, you can try my project getting these.
:AS-LEIVO as-set: AS-LEIVO descr: Macro for LEIVO Network members: AS6820 members: AS-INETKOM members: AS50958 members: AS8662 members: AS50568 members: AS48578 tech-c: DUMY-RIPE admin-c: DUMY-RIPE notify: noc [at] leivo.ru mnt-by: AS6820-MNT created: 2002-06-06T07:05:05Z last-modified: 2023-05-24T13:49:22Z 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: ****************************