WallMeter

Detect if your website is blocked in China by testing from ISPs at multiple locations

从中国大陆多个地区的不同运营商检测你的网站是否被屏蔽

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Valid domain name is required.

API v1 Endpoint
/v1/api.php?domain=google.com

API v1 Response Example

API v1 Response Fields
Per node:
  • blocked - whether the service is blocked from a node
  • as_detected_cn - AS number detected by the node in China
  • as_detected_us - AS number detected by the node in the US
  • ip_detected_cn - IP detected by the node in China
  • ip_detected_us - IP detected by the node in the US
  • web_server_status_cn - Port check on 80 and 443 performed by the node in China
  • web_server_status_us - Port check on 80 and 443 performed by the node in the US
Overall:
  • percentage_blocking_score - A percentage score ranged from 0 to 1 representing how likely is the service blocked (1 = most likely)
  • evaluation - a text description of the testing result

Limitations
False positive scenarios:
  • when a domain uses CDN, load balancer, or GeoDNS that resolves to IPs belong to different ASNs
Other considerations:
  • unstable connection to the remote API servers
  • slow response time that leads to timeout
  • DNS query denied by ISP's DNS servers