Can you open ler.slack.com from mainland China?
Yes.
No recent testsVerdict from 2026-04-25 · 3 mo ago
As of the last test on 2026-04-25 — 3 mo ago — it was reachable in mainland China. We haven't tested it since, so this may have changed.
2020first tested
3 mo agolast tested
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Frequently asked questions
Is ler.slack.com blocked in mainland China right now?
We haven't tested ler.slack.com in the last 90 days. As of the last test on 2026-04-25 (3 mo ago), it was reachable in mainland China. Use the Test now button on this page for a fresh measurement.
http://ler.slack.com · JSON