Website access in Iran
What websites are blocked in Iran?
Iran combines internet filtering with the National Information Network, a large domestic network designed to keep local services operating with controlled access to the wider internet.
How it works
Iran's filtered internet and National Information Network
Domestic infrastructure combined with tightly controlled global access.
Domestic and global traffic are separated
Local services can remain reachable even when access to the wider internet is reduced.
Several kinds of filtering are used
Website lookups, secure connections, and network addresses can all be affected.
Access can change quickly
Restrictions may tighten during major events and can vary across providers and locations.
The National Information Network is infrastructure, not one blocking device. Current measurements decide what this site reports.
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