These entries are queried from radb.net using whois, you can try my project getting these.
:AS-BGPNET as-set: AS-BGPNET descr: AS-Set for AS64050 and Downstream ASN members: AS64050 members: AS14207 members: AS38197 members: AS135026 members: AS134833 members: AS132839 members: AS58931 members: AS45753 members: AS55720 members: AS137499 members: AS132825 members: AS138195 members: AS133941 members: AS54600 members: AS24191 members: AS137983 members: AS138606 members: AS133448 members: AS38186 members: AS133771 members: AS25820 members: AS133441 members: AS18013 members: AS138979 members: AS133322 members: AS139285 members: AS55953 members: AS138979 members: AS24564 members: AS138968 members: AS59251 members: AS4842 members: AS133199 members: AS-ICIDC members: AS398823 members: AS140937 members: AS-CLOUDITIDC-KR members: AS141761 members: AS141190 members: AS399077 members: AS137451 members: AS398993 members: AS40940 members: AS138995 members: AS136545 members: AS394432 members: AS142591 members: AS18403 members: AS139330 members: AS398478 members: AS135097 members: AS-NTTE members: AS140869 members: AS139330 members: AS140869 members: AS136251 members: AS133948 members: AS151850 members: AS-CLOUDIE-HK members: AS141159 members: AS35916 members: AS152194 members: AS152194:AS-CTGS mnt-by: MAINT-AS64050 changed: irr [at] bgp.net 20240226 # 0750Z source: RADB last-modified: 2024-02-26T07:50:44Z as-set: as-bgpnet members: AS212789 members: AS201566 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: BGPNET-MNT mnt-by: MLAB-MNT created: 2022-11-28T16:25:01Z last-modified: 2022-11-28T16:25:01Z 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: ****************************