GreatFire

scientificamerican.com

Mixed

Results vary across scientificamerican.com: of 12 URLs tested, 5 are disrupted some of the time and 7 load normally. 306 tests have been run under this domain since 2012-04-02, the most recent on 2026-08-25.

Plain HTTP and HTTPS differ here: http://scientificamerican.com is intermittent, https://scientificamerican.com 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.

12URLs tested
7accessible
306tests all-time
2012first tested
14 min agolast tested

The site itself

http://scientificamerican.comIntermittenthttps://scientificamerican.comNot blockedhttp://www.scientificamerican.comas of 2026Intermittenthttps://www.scientificamerican.comas of 2026Intermittent

Pages and subdomains (8)

https://blogs.scientificamerican.comas of 2026Intermittenthttps://www.scientificamerican.com/article/arctic-ground-squirrel-brainNot blockedhttps://www.scientificamerican.com/article/why-carbon-dioxide-is-greenhouse-gasIntermittenthttps://www.scientificamerican.com/article/were-french-people-born-to-speak-frenchNot blockedhttps://www.scientificamerican.com/article/fact-or-fiction-oxytocin-is-the-love-hormone/Not blockedhttps://blogs.scientificamerican.com/observations/preparing-for-coronavirus-to-strike-the-u-sNot blockedhttps://www.scientificamerican.com/article/canada-has-as-good-or-better-healthcare-than-united-statesas of 2026Not blockedhttps://blogs.scientificamerican.com/voices/promoting-inclusion-in-stem-one-astrophysics-research-project-at-a-timeas of 2026Not blocked

About scientificamerican.com and the Great Firewall

Is scientificamerican.com blocked in mainland China?

Results vary across scientificamerican.com: of 12 URLs tested, 5 are disrupted some of the time and 7 load normally. 306 tests have been run under this domain since 2012-04-02, the most recent on 2026-08-25.

Why does http://scientificamerican.com behave differently from https://scientificamerican.com?

Plain HTTP and HTTPS differ here: http://scientificamerican.com is intermittent, https://scientificamerican.com 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

Most-blocked .com domainsEvery tested URL under scientificamerican.com

Each URL's status is its verdict over the last 90 days, the same one its own page headlines.