These entries are queried from radb.net using whois, you can try my project getting these.
:AS-RUCENTER as-set: AS-RUCENTER descr: RU-NIC networks members: AS5537 members: AS20144 members: AS25537 members: AS35295 members: AS35569 members: AS39494 members: AS42751 members: AS42399 members: AS43489 members: AS44112 members: AS47385 members: AS47595 members: AS48287 members: AS60216 members: AS199472 members: AS12722 members: AS-RBC members: AS-REGRU tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: RUNIC-MNT mnt-by: NICNOC-MNT created: 2009-11-11T12:34:39Z last-modified: 2022-02-28T06:17:20Z 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: ****************************