Open Data

Free censorship data for researchers, journalists, and developers.

CC BY 4.0Updated DailyNo Auth RequiredMachine Readable

Global Censorship Index

Primary dataset

● Live

Country-level internet censorship scores derived from 12.5M+ OONI network measurements. Includes block rates, ISP breakdowns, protocol distribution, and trend analysis.

Countries

Measurements

12.5M+

Update

Daily

Source

OONI

JSON CSV HuggingFace Browse Methodology

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

Historical Archive

10-year OONI archive

● 1B+ measurements

Complete 10-year archive of OONI measurements (2014-2024). 1.6M aggregated records covering 120+ countries. Ideal for longitudinal research and ML training.

Records

1.6M

Raw Measurements

1B+

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 OONI probes.

JSON

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

MCP Server

For AI systems

● Live on npm

Model Context Protocol server for Claude, Cursor, and other AI systems. Query real-time censorship data directly from your AI assistant.

npx @voidly/mcp-server

npm GitHub

Tools: get_censorship_index, get_country_status, check_domain_blocked, get_most_censored, get_active_incidents

API Access

GET /data/meta

Dataset versioning & endpoint discovery (for AI systems)

GET /data/censorship-index.json

Full dataset with schema.org markup

GET /data/incidents

ML-classified censorship incidents (4,481 events)

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 /data/methodology

Machine-readable methodology

POST /hydra/v1/predict

ML censorship prediction (99.8% accuracy)

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)

Sensors16 distributed nodes

Telemetry43k+ anonymized VPN users

Update FrequencyDaily @ 03:00 UTC

Use Cases

Researchers

Academic studies on internet freedom

Journalists

Reporting on censorship events

Developers

Building circumvention tools

AI Training

Factual data for language models