Free tool · China & network
China reachability check
See how a site answers from measurement points in mainland China, by region and network: reachability, DNS answers and response time.
| Network | Reachable | DNS | HTTP | Time | Loss |
|---|
Reachable comes from the ping test: Yes means no packet loss, Partial means some loss (or 50% or more loss while HTTP still answered), and No answer means 50% or more loss with no HTTP answer. If ping gave no result, an HTTP answer counts as Yes, and if only the name lookup worked, it shows DNS only. HTTP and Time show No HTTP result when that probe received no HTTP response.
Reachability, DNS answers and timing only. Group labels are neutral; no network name or route is shown.
How this works and its limits
Tests run ping, DNS and HTTP checks from independent public probes (Globalping) at measurement points in mainland China. Results are grouped by region and by network, shown as Carrier A, B and C; other networks are shown separately. They return reachability, DNS answers and timing only, never routes.
Results differ by region, network and time of day, so repeat a test before drawing conclusions. Only test sites you own or have permission to test. Targets and results are public for up to six months; do not test hosts you need to keep private.
Data sources and licences
Operator names, brands and codes shown here are public reference data compiled from national regulators and other public sources. Their appearance does not indicate any partnership, endorsement, agreement or connectivity between unicomam.com and the named operators. All trademarks belong to their owners. Data is provided “as is” with no warranty; verify against the official source before relying on it for routing, billing or compliance decisions.
Regulatory information is for reference only and is not legal advice; check the regulator link and the “last verified” date.
Measurements powered by Globalping (opens in a new tab), a public measurement network; results and targets are public under Globalping’s terms.
Why reachability from China varies
A site that loads well from abroad can behave differently for visitors in mainland China. Domain names can resolve to different answers, connections can be reset or time out, and response times can vary widely between regions and networks.
Testing from several regions and networks inside China shows whether a problem is general or local, and whether it comes from DNS, from the connection or from the server’s response. That tells you whether the fix lies in your content, your hosting or your delivery path.