Anti-DDoS Proxy (Outside Chinese Mainland) plans to adjust back-to-origin CIDR blocks on October 15, 2024. The following CIDR blocks will be changed:

Offline 14.1.113.0/24

Offline 14.1.114.0/24

Offline 149.129.224.0/24

Offline 149.129.244.0/24

Offline 149.129.246.0/24

Offline 161.117.173.0/28

Offline 47.245.155.0/24

Offline 47.250.34.0/24

Offline 47.88.196.0/24

Offline 47.88.197.0/24

Offline 47.89.1.0/24

Offline 8.209.192.128/28

14.1.112.0/24 adjust to 14.1.112.128/25

170.33.107.0/24 adjust to 170.33.107.0/27

170.33.23.0/24 adjust to 170.33.23.0/25 and 170.33.23.128/25

170.33.24.0/24 adjust to 170.33.24.0/27 and 170.33.24.32/27

170.33.32.0/24 adjust to 170.33.32.0/25

170.33.40.0/24 adjust to 170.33.40.0/25

170.33.69.0/24 adjust to 170.33.69.0/27 and 170.33.69.32/27

170.33.73.0/24 adjust to 170.33.73.128/25

170.33.80.0/24 adjust to 170.33.80.128/25

170.33.90.0/24 adjust to 170.33.90.0/27

47.253.64.0/24 adjust to 47.253.64.64/26

47.56.51.0/24 adjust to 47.56.51.0/25

You can navigate to the Website Config page and click Back-To-Source CIDR Blocks in the upper-right corner or use OpenAPI to obtain the complete list of back-to-origin CIDR blocks. We recommend using OpenAPI to obtain real-time updates on back-to-origin CIDR blocks.

IMPORTANT: If you have configured access control policies on your origin server to limit source IP addresses, we suggest updating the ACL policies as soon as possible.

If you have any questions, submit a ticket or contact us in the DingTalk service group for consultation. Thank you for your support and cooperation.