These entries are queried from radb.net using whois, you can try my project getting these.
:AS-CTBC-CUSTOMERS114 as-set: AS-CTBC-CUSTOMERS114 descr: 50 customer ASes in each as-set members: AS28184,AS28187,AS28189,AS28197,AS28204,AS28205,AS28207,AS28212,AS28651,AS28292,AS28223,AS28227,AS28229,AS263253,AS262421,AS263252,AS42,AS27833,AS14187,AS265825,AS52346,AS28015,AS27650,AS27845,AS27975,AS13585,AS26596,AS27921,AS22541,AS19429,AS6535,AS52347,AS262195,AS262223,AS262259,AS263766,AS52363,AS52362,AS11014,AS52270,AS263764,AS27902,AS263245,AS264228,AS264231,AS264230,AS27831,AS28083,AS262256,AS52300 mnt-by: MAINT-AS16735 changed: miranda [at] algartelecom.com.br 20181121 #04:34:41Z source: RADB last-modified: 2023-11-13T15:55:17Z