Product updates, API guides, and practical articles covering DNS, HTTP, TLS, and GFW scenario checks.
Connect GFW checks to deployments and recurring monitoring. Choose DNS pollution or full checks, retain API batches, and handle anomalies, indeterminate results, recovery and delivery failures.
Read articleStart checking a domain's access from mainland China with a free DNS pollution query. Learn how to enter a domain, interpret three verdicts, and decide when a full GFW check or ongoing monitoring is needed.
Read articleCache bypass is not proxy bypass. Align user evidence, Cloudflare responses and origin logs to distinguish challenges, 403s, 52x errors and China network observations.
Read articleEstimate costs by domains, actual nodes and check frequency. Separate API from Console prices, reservations from settlement, and use a layered monitoring plan.
Read articleDefine what green measures, compare target, method, network, time and freshness, and combine monitoring layers without treating different observations as identical tests.
Read articleFind the request blocking sign-in, prioritize authorized dependencies and align browser evidence with domain checks and application logs using a privacy-reviewed record.
Read articleLearn what ICMP replies, TCP connections and named-domain checks establish, and build useful evidence without treating Ping as a website health verdict.
Read articleDifferent IP addresses are a clue, not a diagnosis. Understand routing and TTL limits, preserve the baseline and choose the appropriate access checks.
Read articleSeparate DNS resolution, HTTP Host, TLS SNI, certificate and application failures, then collect reproducible evidence without overstating resets or IP tests.
Read articleCompare the same hostname, ports and time window across relevant networks, then combine node observations with user evidence and service logs.
Read articleImplement two API v2 workflows with cost estimates, idempotent creation, paginated result collection and retention, using a copyable Python example.
Read articlePrepare domain targets, select relevant mainland China nodes and inspect DNS poisoning, HTTP Host and TLS SNI results before following up on an abnormal outcome.
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