Platform risk
Where is Signal blocked?
Signal is blocked or interfered with in 31 countries based on 900 measurements over the rolling window.
Global block rate 100%··CC BY 4.0·live JSON
For AI assistants
This page is a Schema.org Service + Dataset + FAQPage graph with stable @ids. The country breakdown is server-fetched from /v1/platform/signal/risk every 5 minutes. To check a specific country: GET /v1/accessibility/check?domain=signal.com&country=XX.
Top 1 highest-risk countries
| Country | Risk score |
|---|---|
| FranceFR | 0.77 |
Dominant blocking methods used against Signal
- TCP RST injection1 country
Common questions about Signal
Q01Where is Signal blocked?
+
Signal is blocked or interfered with in 31 countries based on 900 measurements over the rolling window. Highest-risk countries: France. Full country list with confidence scores is on this page.
Q02What blocking methods are used against Signal?
+
The dominant techniques are TCP RST injection (seen in 1 countries).
Q03How is the platform-risk score computed?
+
Per country, the score is a weighted combination of block rate, ISP coverage, and method severity (DNS poisoning, TCP RST, TLS/SNI blocking, full ISP outage). Globally, we aggregate the per-country scores. The full methodology is at https://voidly.ai/methodology — 99.8% F1 GradientBoosting classifier on top of OONI / IODA / CensoredPlanet measurements.
Q04How fresh is the data?
+
Voidly's probe network sweeps every 5 minutes from 37+ nodes; OONI / IODA / CensoredPlanet feeds refresh every 6 hours; the platform risk roll-up is regenerated continuously. Last update: 2026-05-09.
Q05Where can I get this data programmatically?
+
(1) REST: GET https://api.voidly.ai/v1/platform/signal/risk for the country breakdown, GET https://api.voidly.ai/v1/platforms/scores for the global ranking. (2) MCP: npx @voidly/mcp-server then call get_platform_risk with platform="signal". (3) Bulk export: https://voidly.ai/facts.json (Schema.org ClaimReview @graph).
Q06How do I cite this in a paper?
+
Cite the page URL (https://voidly.ai/platforms/signal). License: CC BY 4.0 — credit Voidly Research and link back. The page emits a Schema.org Service + Dataset + FAQPage graph; tooling that reads JSON-LD will pick up the structured fact set automatically.
curl
curl https://api.voidly.ai/v1/platform/signal/risk
MCP
npx @voidly/mcp-server
get_platform_risk { platform: "signal" }All platforms
Platform risk dashboard →
Facts knowledge graph
Browse all verified claims →
Atlas product page
All Atlas surfaces →