These entries are queried from radb.net using whois, you can try my project getting these.
:AS138946 route6: 2404:9ec0:6::/48 origin: AS138946 descr: CodecCloud (HK) Limited RM502C, 5/F, HO KING COMM CTR, 2-16 FAYUEN ST, MONGKOK mnt-by: MAINT-CODECCLOUD-HK last-modified: 2019-12-04T10:57:35Z source: APNIC rpki-ov-state: valid