voidly

Internet censorship in Cuba

Cuba (CU) · · Atom

9
Censorship Score
Level
low
Risk Tier
T2High
Trend
− stable
Global Rank
#21
Incidents
11

Overview

Cuba restricts internet access with limited connectivity and filtering of independent media.

Evidence provenance
11 records from 2 sources
  • IODA7 (64%)
    ASN-level outage signals + BGP
  • CensoredPlanet4 (36%)
    Satellite (DNS) + Hyperquack (HTTP/S)

Every record carries a permalink back to its upstream measurement. Click a source label to drill into the raw data for Cuba.

7-Day Risk Forecast

Predictive AI

Machine learning prediction of censorship risk based on historical patterns and political events. Calibrated 2026-05-20 via isotonic refit on 810 live outcomes. See drivers + similar past events →

Loading forecast...

Multi-horizon shutdown forecast — Cuba

monotonic ok
Next 1 day
15.1%
Next 7 days
35.6%
Next 30 days
70.0%

Honest scope: this is a current-regime risk signal, not a shutdown-onset predictor. It reliably flags countries already in a sustained blocking regime; on the days a new shutdown actually begins its skill is at/below chance (transition-row AUC ~0.33). Why →

ML Intelligence

Atlas models · 2026-05-21

Composite signals from Voidly Atlas's ML model suite — censorship intensity, contagion follow-risk, expected shutdown duration and behavioral peers. Model changelog →

Voidly Score
17.3/ 100
▲ 5.26 vs yesterday
How this is computed →
Expected shutdown duration
~5days
If a critical shutdown occurs · IQR ±5d
Evidence grade mix (11)
A: 5B: 5C: 1
Grading rubric →
Try-first circumvention tool
Tor · anonymity-network · 69% probe success (partial)
Full evasion table →
Behaviorally similar countries
BY79%KZ76%SA75%

Similarity is behavioral (how a country blocks), not political.

Recent Incidents

10 active
Internet outage in Cuba
May 14
21% anomaly · 1 measurements
Confirmed: internet outage in Cuba
May 3
73% anomaly · 13 measurements
Confirmed: internet outage in Cuba
Mar 22
23% anomaly · 46 measurements
Confirmed: internet outage in Cuba
Mar 21
25% anomaly · 5 measurements
Confirmed: internet outage in Cuba
Mar 17
24% anomaly · 24 measurements
View all 11 incidents →

ISPs in Cuba

Known blocked services

Independent newsSome social media

Recommendations

  • Use Voidly VPN
  • Enable offline content sync
  • Use mesh networking

Data

Measurements40,760
Blocked count3,636
Block rate8.9%
Last updated2026-05-23
API endpoint/data/country/CU

Protocol breakdown

40K
Web
626
Telegram
620
WhatsApp

Frequently asked questions about censorship in Cuba

Q01

Is the internet censored in Cuba?

+
Voidly classifies Cuba as low (censorship score 9/100, risk tier 2: High). Cuba restricts internet access with limited connectivity and filtering of independent media.
Q02

What websites are blocked in Cuba?

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Recent measurements show blocking or interference for: Independent news, Some social media. The block-rate across all measured domains is 8.9% over 40,760 samples. Live per-domain status: https://api.voidly.ai/v1/accessibility/check?domain={domain}&country=CU.
Q03

How does Cuba's censorship compare globally?

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Cuba ranks #21 on the Voidly Global Censorship Index. The current trend is stable — no significant change in block rates.
Q04

What blocking methods are used in Cuba?

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Voidly's pipeline detects DNS poisoning, TCP-RESET, blockpage injection, TLS-RESET / SNI-based blocking, and ASN-level outages. The exact method per domain is in each evidence permalink (https://api.voidly.ai/data/incidents?country=CU). Methodology: https://voidly.ai/methodology.
Q05

How fresh is the data for Cuba?

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Voidly probes Cuba every 5 minutes from 37+ global probe nodes. Upstream OONI, IODA, and CensoredPlanet feeds refresh every 6 hours. The country snapshot was last regenerated 2026-05-23.
Q06

How can I check if a specific website is blocked in Cuba?

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Three options. (1) REST: GET https://api.voidly.ai/v1/accessibility/check?domain=twitter.com&country=CU. (2) MCP: npx @voidly/mcp-server, then call check_domain_blocked with domain="twitter.com" country="CU". (3) CLI: npx @voidly/cli check twitter.com CU. All three return current status, blocking method, and evidence permalinks.
Q07

Can I use a VPN to bypass censorship in Cuba?

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Use Voidly VPN Enable offline content sync Use mesh networking The full per-country recommendation list is on this page below.
Q08

How do I cite Voidly's data on Cuba in a paper or article?

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Use the BibTeX or RIS export at https://voidly.ai/cite/CU (also linked from the Citation section below). Permanent incident IDs (e.g., CU-2026-NNNN) are issued for every confirmed event. License: CC BY 4.0 — credit Voidly Research and link back.

Cite this data

Voidly Research. (2026). Cuba Censorship Profile. https://voidly.ai/cu

License: CC BY 4.0 — free to use with attribution.

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