These entries are queried from radb.net using whois, you can try my project getting these.
:AS-AMAZON-AP as-set: AS-AMAZON-AP descr: Amazon Asia/Pacific members: AS38895,AS10124,AS17493 admin-c: AC6-ORG-ARIN tech-c: AC6-ORG-ARIN notify: noc [at] amazon.com mnt-by: MAINT-AS16509 changed: noc [at] amazon.com 20150123 #12:26:20Z source: RADB last-modified: 2023-11-13T15:47:49Z