These entries are queried from radb.net using whois, you can try my project getting these.
:AS-CTJS as-set: AS-CTJS descr: ASes within CT JIANGSU province members: AS139584 members: AS134756,AS138950,AS134770,AS134769,AS137697,AS131325,AS137699,AS134417,AS23650,AS146966 members: AS55998,AS63705,AS637612,AS139090,AS38365,AS45275,AS45110 members: AS140290,AS140291,AS140292,AS140293,AS140294,AS140295,AS140296,AS140297,AS140298,AS140299,AS140300,AS140301,AS140302,AS140303 members: AS56012 mnt-by: MAINT-AS137702 changed: ipregister.js [at] chinatelecom.cn 20230627 #07:50:00Z source: RADB last-modified: 2023-11-13T16:17:31Z