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Per-topic censorship intelligence

Voidly's topic-filtered API segments censorship measurements by Citizen Lab category — so you can ask "which countries block women's health information" and get a real, sourceable answer.

4
topic categories
291
country / topic rows
20
severe-level entries

The four topic categories

Tap any card to see the full ranking, blocked-domains breakdown, and copy-paste API access.

GRP·GRP
5 severe

Women's health & rights

Reproductive rights, women's health, LGBT advocacy, human rights organizations.

#1India100
#2United States89
#3China81
79 countries with data18498 evidence rows
NEWS·NEWS
2 severe

Press freedom

Independent news outlets, journalism, and press-freedom organizations.

#1China100
#2Russia97
#3Bangladesh56
68 countries with data6988 evidence rows
COMT·COMT
8 severe

Circumvention tools

VPN services, Tor, Signal, Telegram, WhatsApp, anti-censorship infrastructure.

#1Turkey100
#2Venezuela99
#3India88
68 countries with data7851 evidence rows
MMED·MMED
5 severe

Multimedia & video

YouTube, Instagram, Tumblr, streaming services, podcasts, video sharing.

#1China100
#2Russia79
#3Singapore76
76 countries with data2247 evidence rows

How topic filtering works

Voidly aggregates network measurements (DNS, TCP, TLS, HTTP) from OONI, CensoredPlanet, IODA, and our own probe network. Every blocked domain is mapped to a Citizen Lab test-list category. The topic API filters those measurements down to a single category, then ranks countries by total blocking volume in that category.

17 human-readable topic aliases (e.g. women-health, press-freedom) map onto 4 underlying base categories. Pick one of the four cards above to see country-level rankings.

Cite as voidly.ai/topics