These entries are queried from radb.net using whois, you can try my project getting these.
:AS-ROSTNET as-set: AS-ROSTNET descr: Networks distributed outside via ROSTNET members: AS43110 members: AS-IU members: AS31044 members: AS34077 members: AS44750 members: AS45045 members: AS49389 members: AS56526 members: AS56600 members: AS56812 members: AS61219 members: AS202165 members: AS203980 members: AS208531 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: MNT-ROSTNET created: 2008-07-13T19:31:55Z last-modified: 2020-05-10T14:31:19Z 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: ****************************