These entries are queried from radb.net using whois, you can try my project getting these.
:AS-RETN-RU as-set: AS-RETN-RU members: AS24429 members: AS29470 members: AS34545 members: AS34597 members: AS34639 members: AS50820 members: AS51309 members: AS56533 members: AS198062 members: AS198705 members: AS198947 members: AS200453 members: AS201800 members: AS206904 members: AS207692 members: AS207867 members: AS212075 members: AS-2GIS members: AS-BUSINESS-PARTNERSHIP members: AS-CITYLANLLC members: AS-SE admin-c: DUMY-RIPE tech-c: DUMY-RIPE notify: peering [at] retn.net mnt-by: MNT-RETNRU created: 2017-08-22T17:08:22Z last-modified: 2024-03-07T18:55:43Z 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: ****************************