nexusb2l7fmqnefwphyy7m5zjhlkytlbo7qbb5lu5dlczr3azgii2gyd.onionnexusma2iqgauqqvjcgds4ckv5xbf272tkfagq4epojjhsgleqpwxiqd.onionnexusabcd6tyfhdwilyitaqiri6tisj2v2hueyjuj6qkvd6azvi5tuqd.onionRun the check before you sign in. Open these in Tor Browser only. When the login screen loads, compare the onion printed on the page against your address bar, reading from the end. If they differ, close the tab.
Most people decide a mirror is broken after one impatient attempt. A reading takes three minutes and gives you an answer you can actually act on.
The procedure
- Note the time and paste the address. Do not type it.
- Let the load run to completion or to its own timeout. Do not touch the tab.
- Write down what happened and how long it took. An error code, a spinner, or a page.
- Request a new circuit for the site and repeat once.
- Repeat the same two attempts on a second address.
Why the new circuit step matters
Without it you are measuring one path through the network, not the mirror. Half of all apparent outages are one unlucky relay, and the second attempt on a fresh path tells the two apart for free.
Reading the result
| Attempt 1 | Attempt 2, new circuit | Conclusion |
|---|---|---|
| Fails | Works | Your path was the problem. The mirror is fine. |
| Works | Works | Healthy. Any slowness is load, not a fault. |
| Fails | Fails | That address has a real problem. Try the next one. |
| Fails on all three | Fails on all three | A service wide event. Wait, do not search. |
The mistake that ruins readings
Cancelling early. A cold connection to a busy onion service can legitimately take a minute, so an attempt abandoned at fifteen seconds produces no data at all. Two patient attempts beat ten impatient ones every time.
What to do with the answer
If one address works, use it and stop measuring. The reading exists to get you moving, not to build a picture of the network. Nobody is paying you to monitor this.
Other procedures
Choosing which of the three mirrors to use
The three Nexus addresses reach the same market. How to pick between them sensibly and why the fastest one today may not be tomorrow.
FixRequesting a new circuit, and when it actually helps
The single most useful control in Tor Browser for onion problems, what it does, what it costs and which symptoms it fixes.
SafetyConfirming you are on a real Nexus mirror
The check that separates the market from a convincing copy, why appearance proves nothing and what to do if the check fails.
Signals this procedure fixes
No error page, just a spinner that gives up
When a Nexus mirror produces no error at all and the tab simply spins, the useful information is in how long it spins before quitting.
LatencyLong wait before anything appears
Time to first byte on an onion service includes six relays and a rendezvous. What is normal for a Nexus mirror and when the number stops being normal.
ReachabilityOnionsite Has Disconnected
The 0xF2 error means the descriptor was found but the service did not answer. Why that is a better sign than it looks and how long to give it.