dukou.icu
Mixed
Results vary across dukou.icu: of 2 URLs tested, 1 is disrupted some of the time and 1 loads normally. 30 tests have been run under this domain since 2021-08-01, the most recent on 2026-05-04.
The two are filtered by different means — an unencrypted request by the address and keywords it carries in the clear, an encrypted one by the server name in its TLS handshake — so one working while the other does not is normal.
The site itself
http://dukou.icuas of 2026Intermittenthttps://dukou.icuas of 2024Not blockedAbout dukou.icu and the Great Firewall
Results vary across dukou.icu: of 2 URLs tested, 1 is disrupted some of the time and 1 loads normally. 30 tests have been run under this domain since 2021-08-01, the most recent on 2026-05-04.
Plain HTTP and HTTPS differ here: http://dukou.icu is intermittent, https://dukou.icu is not blocked. The two are filtered by different means — an unencrypted request by the address and keywords it carries in the clear, an encrypted one by the server name in its TLS handshake — so one working while the other does not is normal.
Elsewhere on the site
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.