These entries are queried from radb.net using whois, you can try my project getting these.
:AS-GCN-TH as-set: AS-GCN-TH descr: GCN TH AS-SET members: AS12615 members: AS9028 members: AS-NET1OUT members: AS-COMNET-BG members: AS-NETWORXBG members: AS34841 members: as-rimex members: AS39246 members: AS-NETGUARDBG members: AS-LINKPLUS members: AS41019 members: AS43205 members: AS44247 members: AS44313 members: AS44525 members: AS44851 members: AS44967 members: AS28909 members: AS47374 members: AS47453 members: AS48917 members: AS49040 members: AS50013 members: AS59463 members: AS60182 members: AS60325 members: AS62174 members: AS201254 members: AS-ICON members: AS39881 members: AS56906 members: AS51855 members: AS198228 members: AS203917 members: AS42878 members: AS205352 members: AS39251 members: AS29622 members: AS-ITVNET_OUT members: AS35773 members: AS41624 members: AS12436 members: AS34754 members: AS49188 members: AS42086 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: GCN-LIR-MNT created: 2018-10-03T13:09:02Z last-modified: 2022-01-11T10:35:37Z 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: ****************************