These entries are queried from radb.net using whois, you can try my project getting these.
:AS-ZONE as-set: AS-ZONE descr: 1942 Broadway Ste 314C Boulder CO 80302 United States members: AS201751 admin-c: NOC33555-ARIN tech-c: NOC33555-ARIN mnt-by: MNT-ZNL-19 created: 2022-12-18T04:04:07Z last-modified: 2022-12-18T04:04:32Z source: ARIN as-set: AS-Zone descr: AS Set for Zone Telecom members: AS11351,AS5760,AS33156 admin-c: ZONE1-LEVEL3 tech-c: ZONE1-LEVEL3 notify: BUSINESS [at] ZONETELECOM.COM mnt-by: EDH-GWI-MNT changed: david.neener [at] level3.com 20091216 source: LEVEL3 as-set: AS-ZONE descr: Zone Media LLC descr: AS Numbers > Global members: AS49604 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: MNT-ZONE-OPS notify: noc [at] zone.eu created: 2009-05-15T08:10:25Z last-modified: 2024-02-13T20:16:18Z 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: ****************************