https://www.alibabacloud.com/help/ja/edge-security-acceleration/dcdn/developer-reference/api-dcdn-2018-01-15-describedcdnipinfo
Call DescribeDcdnIpInfo to check if an IP is a DCDN node - Edge Security Acceleration - Alibaba...
Call the DescribeDcdnIpInfo API to programmatically verify if an IP is a DCDN node, receiving a boolean response with its region and ISP details.