Can you open a4b.us-east-1.amazonaws.com from mainland China?
Not sure yet.
There isn't enough recent data to reach a verdict.
2018first tested
2 mo agolast tested
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Other tested URLs on amazonaws.com
Blocking varies across amazonaws.com: 3 blocked vs 66 accessible among tested hosts.
http://amazonaws.comas of 2026Not blockedhttps://amazonaws.comNot blockedhttp://s3.amazonaws.comNot blockedhttp://r1.amazonaws.comNot enough datahttp://www.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.comNot blockedhttp://iam.amazonaws.comNot enough datahttp://sts.amazonaws.comNot enough datahttps://www.amazonaws.comNot enough datahttp://s3.amazonaws.com/cnNot blockedhttps://s3.amazonaws.com/aNot blockedhttps://s3.amazonaws.com/1as of 2026Not blockedhttp://s3-1-w.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com:80Not enough datahttp://vz1.s3.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com/voaas of 2026Not blockedhttps://www.s3.amazonaws.comas of 2026Not blockedhttp://umap.s3.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com/abcas of 2026Intermittenthttps://s3-1-w.amazonaws.comas of 2026Not blockedhttp://checkip.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com/404as of 2026Not blockedhttp://vtconf.s3.amazonaws.comas of 2026Not blockedhttp://insite.s3.amazonaws.comas of 2025Not blockedhttp://nxtcfm.s3.amazonaws.comas of 2026Not blockedhttp://s3.amazonaws.com/vantiqas of 2026Not blockedhttp://s3.amazonaws.com/lanternNot blockedhttp://mooclab.s3.amazonaws.comNot blockedhttps://kjkpub.s3.amazonaws.comNot blockedhttp://movband.s3.amazonaws.comas of 2026Not blockedhttp://s3.amazonaws.com/moxaaptas of 2026Not blockedhttp://psiphon.s3.amazonaws.comas of 2026Not blockedhttp://cloudfront.amazonaws.comNot enough datahttps://cdtimes.s3.amazonaws.comas of 2026Blockedhttp://spectrum.s3.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com/lanternas of 2026Not blockedhttps://playism.s3.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com/bcr-imgas of 2026Not blockedhttps://psiphon.s3.amazonaws.comas of 2026Not blockedhttp://s3-us-west-1.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com/lookworkas of 2026Not blockedhttp://s3.amazonaws.com/freeweiboas of 2026Not blockedhttp://freeweibo.s3.amazonaws.comas of 2026Blockedhttps://uni-insp.s3.amazonaws.comNot blockedhttps://roxority.s3.amazonaws.comNot blockedhttps://s3.amazonaws.com/asdfdsafNot blockedhttp://skiracing.s3.amazonaws.comas of 2026Not blockedhttp://tradegood.s3.amazonaws.comas of 2026Not blockedhttps://speakerd.s3.amazonaws.comas of 2026Not blockedhttp://s3-us-west-2.amazonaws.comas of 2026Not blockedhttp://s3-eu-west-1.amazonaws.comas of 2026Intermittenthttp://s3.us-west-1.amazonaws.comNot blockedhttp://s3.us-east-2.amazonaws.comas of 2026Not blockedhttp://s3-us-east-2.amazonaws.comas of 2026Not blockedhttp://connectio.s3.amazonaws.comNot blockedhttp://dev-quwan.s3.amazonaws.comas of 2026Not blockedhttp://s3.us-west-2.amazonaws.comas of 2026Not blockedhttp://s3.eu-west-3.amazonaws.comNot blockedhttp://s3.eu-west-1.amazonaws.comas of 2026Not blockedhttp://s3.us-east-1.amazonaws.comNot blockedhttp://s3.ap-east-1.amazonaws.comas of 2025Not blockedhttps://smd-prod.s3.amazonaws.comas of 2026Not blockedhttp://s3.eu-west-2.amazonaws.comas of 2026Not blockedhttp://anywhere.eks.amazonaws.comas of 2025Intermittenthttp://wallvision.s3.amazonaws.comas of 2025Not blockedhttps://freeweibo.s3.amazonaws.comBlockedhttps://s3-us-west-1.amazonaws.comas of 2026Not blockedhttps://s3-eu-west-1.amazonaws.comas of 2026Not blockedhttps://s3-sa-east-1.amazonaws.comas of 2026Not blockedhttps://s3-us-west-2.amazonaws.comas of 2026Not blockedhttps://s3.amazonaws.com/freeweiboIntermittenthttps://skiracing.s3.amazonaws.comNot blockedhttps://s3.amazonaws.com/skiracingas of 2026Not blockedhttp://vd-emp-prd.s3.amazonaws.comNot blockedhttps://bitchname.s3.amazonaws.comas of 2026Not blockedhttp://pr-preview.s3.amazonaws.comas of 2026Not blockedhttps://s3.us-east-2.amazonaws.comas of 2026Not blockedhttps://s3.ap-east-1.amazonaws.comNot blockedhttps://csis-prod.s3.amazonaws.comas of 2026Not blockedEach verdict covers the last 90 days of tests, as on that URL's own page.
Frequently asked questions
Is a4b.us-east-1.amazonaws.com blocked in mainland China right now?
As of the last test on 2026-05-23, a4b.us-east-1.amazonaws.com is not enough data in mainland China, based on GreatFire's live Great Firewall measurements.
http://a4b.us-east-1.amazonaws.com · JSON