Can you open https://sing-box.sagernet.org/configuration/outbound/vless from mainland China?
No.
No recent testsVerdict from 2026-01-27 · 7 mo ago
As of the last test on 2026-01-27 — 7 mo ago — it was blocked in mainland China. We haven't tested it since, so this may have changed.
Access sing-box.sagernet.org with GreatFireVPN →Frequently asked questions
Is https://sing-box.sagernet.org/configuration/outbound/vless blocked in mainland China right now?
We haven't tested https://sing-box.sagernet.org/configuration/outbound/vless in the last 90 days. As of the last test on 2026-01-27 (7 mo ago), it was blocked in mainland China. Use the Test now button on this page for a fresh measurement.
Why is https://sing-box.sagernet.org/configuration/outbound/vless blocked in mainland China?
As of the last test on 2026-01-27 — 7 mo ago — it was blocked in mainland China. We haven't tested it since, so this may have changed.
Since when has https://sing-box.sagernet.org/configuration/outbound/vless been blocked?
GreatFire has recorded interference with https://sing-box.sagernet.org/configuration/outbound/vless from mainland China since 2026-01-27.
How can I access https://sing-box.sagernet.org/configuration/outbound/vless 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 sing-box.sagernet.org.
https://sing-box.sagernet.org/configuration/outbound/vless · JSON