Is https://mozilla.org blocked in mainland China?

All of mozilla.orgMixed190 tested URLs

Can you open https://mozilla.org from mainland China?

Sometimes.

Access is unreliable — 100% of the last 1 conclusive tests showed interference.

Same address over HTTP:http://mozilla.orgIntermittent

Access mozilla.org with GreatFireVPN →

2014first tested

1/1disrupted · last 90 days

15 d agolast tested

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Other tested URLs on mozilla.org

Mixed2 blocked74 disrupted108 accessible6 no verdictAll 190 tested URLs on mozilla.org →

Blocking varies across mozilla.org: 2 blocked vs 108 accessible among tested hosts.

Each verdict covers the last 90 days of tests, as on that URL's own page.

Frequently asked questions

Is https://mozilla.org blocked in mainland China right now?

As of the last test on 2026-07-25, https://mozilla.org is 100% disrupted in mainland China, based on GreatFire's live Great Firewall measurements.

Why is https://mozilla.org blocked in mainland China?

Access is unreliable — 100% of the last 1 conclusive tests showed interference.

Since when has https://mozilla.org been blocked?

GreatFire has recorded interference with https://mozilla.org from mainland China since 2014-11-18.

How can I access https://mozilla.org from mainland China?

You need a circumvention tool such as a VPN. GreatFireVPN, built by GreatFire, is designed to bypass the Great Firewall and reach sites like mozilla.org.

https://mozilla.org · JSON