These entries are queried from radb.net using whois, you can try my project getting these.
:AS-DELTA-TELESYSTEMS as-set: AS-DELTA-TELESYSTEMS descr: Delta Telesystems AS set members: AS13259 members: AS-KRAVTSOV members: AS-RULINK members: AS198755 members: AS41058 members: AS200980 members: AS31112 members: AS209734 members: AS202923 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: MNT-DELTA-TELESYSTEMS created: 2010-04-22T05:23:19Z last-modified: 2024-03-29T20:04:08Z 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: ****************************