How checks work
A simple answer, backed by checks.
We check how websites behave in different places, look for repeated trouble, and turn the latest results into a clear answer.
Background coverage
The research index checks for changes every hour.
Checking the latest background update…
Four simple steps
From a website name to a useful answer
Each step has one job.
- 1 Choose websites Popular sites and background research help us decide what is worth checking.
- 2 Run fresh checks We look at how a site behaves on networks in different countries.
- 3 Compare patterns Repeated, similar failures matter more than one broken connection.
- 4 Explain the result We show what happened, where it happened, and when it was checked.
Reading an answer
Three results you may see
Open a result to see its countries, checks, and updated time.
Possible interference
A signal needs context.
Sampled checks crossed the interference reporting threshold. Open country details for counts, dates, and outcomes; conditions may vary by network.
No interference detected in sampled checks
No signal crossed the reporting threshold.
The available fresh samples did not cross the reporting threshold. This does not establish access on every network.
Unknown
There is not enough data yet.
Too few recent checks or mixed results.
Why results change
Your experience may be different
A country is not one network. Access can change during the day and can differ between home internet, mobile service, workplaces, and cities.
Different providers
One provider may filter a service while another still reaches it normally.
Different places
A local block or outage may affect one region without affecting the whole country.
Different times
Controls can begin, end, or change quickly, so the date of a check matters.
Different coverage
Some places have many recent checks. Others have only a few, which lowers confidence.
Optional technical detail See which evidence matters most +
See how the evidence layers fit together.
Can shape the answer
Fresh website checks
Recent tests from real networks show whether a site loaded normally or ran into a repeatable problem.
Build confidence
Repeated patterns
The same kind of failure across more than one check matters more than a single broken request.
Helps explain
Outage and network context
A widespread outage or routing problem can look like blocking. This context helps us avoid the wrong conclusion.
Choose what to check
Research lists
Background lists help choose websites for fresh checks.