FREE TOOL · NO LOGIN · READ-ONLY
See what is wrong before deciding what to do.
Enter a public website domain. We perform real DNS A/AAAA resolution, a TLS certificate handshake and one HTTPS homepage request, then return timestamps, status and evidence. No server login or changes are involved.
Free website check
Public domains only. Do not enter IP addresses, private hostnames, URLs containing credentials or secrets.
Connecting to the diagnostic service…
What to check next
These are symptom-based suggestions, not a proven root cause. No changes were made to your site or device.
After trying these steps, is it working?
Sandbox payment test
Testing only. No real funds will be charged.
Need help fixing it?
Submit a paid-service request. We will confirm the issue and scope, then send a clear quote. You approve the quote before paying; we will not modify your system without authorization.
From Xianyu: this page provides free checks, self-help steps and a diagnostic summary without asking for off-market contact details. For paid services, return to Xianyu to agree on scope, order and pay within the marketplace.
- Free check
- Submit request
- Confirm scope & quote
- Confirm payment method
- Authorized work & retest
Important: live free diagnostics and paid-service requests are available. The payment method is confirmed during quoting; this page does not charge you and automated repair is not enabled. A reference number confirms receipt only—not an order, payment or completed repair.