Open Data

Free, citable censorship data for researchers, journalists, developers, and civil society. 19.6M live measurements from 5 sources, 5,356 incidents, 130+ countries — updated continuously, CC BY 4.0.

License: CC BY 4.0·Sources: OONI · IODA · CensoredPlanet · Voidly probes · Citizen Lab·Updated: 2026-05-10

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CC BY 4.0Updated DailyNo Auth RequiredMachine Readable

Global Censorship Index

Primary dataset

● Live

Country-level internet censorship scores derived from 36.0M+ multi-source measurements (OONI, IODA, CensoredPlanet). Includes block rates, ISP breakdowns, protocol distribution, and trend analysis.

Countries

200

Measurements

36.0M+

Update

Daily

Sources

Multi-source

JSON CSV HuggingFace Open in HuggingFace Space Browse Methodology

Schema: country, score, level, trend, samples, blocked_count, block_rate, isps[]

Live Explorer on HuggingFace

No-code interface to the Voidly API

● Interactive

A Gradio-powered Space that lets researchers, journalists, and policy teams query the censorship index without writing code. Includes per-domain checks, an AI services watchlist (ChatGPT, Claude, Gemini, etc.), topic filters, and CSV/JSON export on every view.

Open in HuggingFace Space HF Live Dataset HF Historical Archive

5 tabs: Accessibility check · Censorship Index · AI Services Watchlist · Topic filter · About

Historical Archive

10-year measurement archive

● 2.2B+ source measurements

Complete 10-year archive of OONI measurements (2014-2024). 1.6M aggregated records covering 200+ countries. Ideal for longitudinal research and ML training.

Records

1.6M

Raw Measurements

2.2B+ (OONI aggregate)

Time Range

10 years

Format

Parquet

HuggingFace

Schema: date, country, anomaly_count, ok_count, confirmed_count, failure_count, measurement_count, anomaly_rate

ISP Breakdown

Granular ISP-level data

Per-ISP censorship analysis including ASN identifiers, block rates by provider, and specific blocked domains detected through multi-source measurements.

ISP Risk Index API Docs

Schema: country, asn, name, block_rate, threat_level, blocked_domains[]

7-Day Risk Forecast

Predictive censorship intelligence

New

ML-powered predictions of censorship risk for the next 7 days. Uses historical patterns, election calendars, and political events to forecast shutdowns.

Countries

200+

Horizon

7 days

Update

Hourly

Events

Wikipedia + GDELT

API Docs Election Risk Docs

Response: forecast[], summary (max_risk, drivers), confidence

VPN Accessibility

Unique data only Voidly provides

New

Real-time VPN reachability data from 30+ global probe nodes. Answers the question: "Can users in Iran/China/Russia actually connect to VPNs?"

Probe Nodes

30+

VPN Providers

Update

5 min

Unique

Yes ✓

API Docs

Tests: Voidly nodes, NordVPN, ProtonVPN, Mullvad (WireGuard UDP:51820)

Block Page Fingerprinting

Attribution of blocking entities

New

When we detect a block, we identify who is blocking. Distinguishes between government-mandated (Roskomnadzor, Iran TIC) vs ISP filters (Fortinet, Netsweeper).

Fingerprints

15+

Countries

10+

Entities: Roskomnadzor (Russia), Iran TIC, Great Firewall (China), BTK (Turkey), CITC (Saudi), PTA (Pakistan), Kominfo (Indonesia), Fortinet, Netsweeper, and more

Voidly Network Data

Real-time HTTP blocking from 30+ global nodes

New

Domain-level blocking data from the Voidly Network. 62 domains tested every 5 minutes from 30+ nodes (core + community + Fly.io). Includes blocking method (dns-poison, tcp-reset, blockpage) and blocking entity attribution (Roskomnadzor, Iran TIC, etc.).

Probe Nodes

30+

Domains

Interval

5 min

Attribution

Yes

Network Status Probe Stats Run a Probe API Docs

Run your own probe node:

pip install voidly-probePyPI|Docker Hub

Endpoints: /v1/probe/network, /v1/probe/stats, /v1/probe/domain/{domain}

Platform Risk Scores

Per-platform censorship intelligence

New

Censorship risk scores for major platforms (Twitter, WhatsApp, Telegram, YouTube, etc.) broken down by country. Answers: "How censored is platform X in country Y?"

Explore API Docs

Endpoints: /v1/platforms/scores, /v1/platforms/{platform}, /v1/platforms/country/{code}

Semantic Incident Search

Natural-language queries over the 10-year archive

New ✨

Ask in plain English ("WhatsApp blocked in Iran during elections") and get the top-K semantically similar incidents ranked by cosine similarity across 1,577+ confirmed cases. Powered by sentence-transformers embeddings — sub-60ms latency on CPU. Optional filters for country, incident type, min confidence.

curl "https://intelligence.voidly.ai:8443/v1/incidents/similar?query=WhatsApp+blocked+in+Iran&k=5"

API Docs Live Demo

Endpoints: GET/POST /v1/incidents/similar · Filters: country, incident_type, min_confidence · No auth required

Service Accessibility

Real-time accessibility oracle

New

Can users in country X access service Y right now? Real-time checks backed by30+ probe nodes, OONI, CensoredPlanet, and IODA. Designed for circumvention tools and researchers.

Try It API Docs

Endpoints: /v1/accessibility/check, /v1/accessibility/batch, /v1/accessibility/service/{name}

MCP Server — 83 Tools

For Claude, Cursor, Windsurf, Cline & more

● Live on npm

Model Context Protocol server with 119 tools covering censorship intelligence, Voidly Network monitoring, and E2E encrypted agent relay.

npx @voidly/mcp-server

npm GitHub Explore All 89 Tools →

33 censorship tools + 56 agent relay tools · v2.9.1 · CC BY 4.0

Python SDK

For LangChain, CrewAI & custom AI agents

New

E2E encrypted agent-to-agent communication. Async messaging, channels, memory, tasks, trust scoring. Built-in LangChain and CrewAI integrations.

pip install voidly-agents[all]

PyPI GitHub Agent Relay Docs →

40+ methods · LangChain (9 tools) · CrewAI (7 tools) · MIT License

Embed on Your Site

Live censorship widgets for news sites, NGOs, and research blogs

Copy-paste embed code for any page. Three sizes: full dashboard, compact card, or inline badge. Dark and light themes. Optional passive measurement contribution.

Widget Builder →

API Access

GET /data/meta

Dataset versioning & endpoint discovery

GET /data/censorship-index.json

Full dataset with schema.org markup

GET /data/incidents

ML-classified censorship incidents (2,400+ events, 72,000+ evidence items, growing daily)

GET /data/incidents/delta?since=...

Delta feed - changes since timestamp (for sync)

GET /data/country/:code

Single country data (e.g., /data/country/CN)

GET /v1/vpn-accessibility

✨ VPN reachability from 30+ global nodes (unique data)

GET /data/methodology

Machine-readable methodology

POST /hydra/v1/predict

ML censorship prediction (99.8% F1, internal eval)

Full API Documentation →

Citation

Voidly Research. (2026). Global Censorship Index [Data set]. https://voidly.ai/live

License: CC BY 4.0 • Free to use with attribution

Data Sources

PrimaryOONI (Open Observatory of Network Interference)

OutagesIODA (Internet Outage Detection & Analysis)

DNS/HTTPCensoredPlanet (University of Michigan)

Probes30+ nodes (core + community + Fly.io, 5 min intervals)

ML Model99.8% F1 classifier (GradientBoosting v2, internal eval)

Update FrequencyDaily @ 03:00 UTC

Use Cases

Researchers

Academic studies on internet freedom

Journalists

Reporting on censorship events

Developers

Building circumvention tools

Reference Data

Structured censorship data for any downstream use

Cite this page

All Voidly Research data is licensed under CC BY 4.0. You can redistribute, remix, and build on it freely with attribution.

Global Censorship Index

Live Explorer on HuggingFace

Historical Archive

ISP Breakdown

7-Day Risk Forecast

VPN Accessibility

Block Page Fingerprinting

Voidly Network Data

Platform Risk Scores

Semantic Incident Search

Service Accessibility

MCP Server — 83 Tools

Python SDK

Embed on Your Site

API Access

Citation

Data Sources

Use Cases

Researchers

Journalists

Developers

Reference Data

See also

Cite this page