Enter a public domain or IP address. The check runs on our Linux server in Düsseldorf and attempts to reveal responding hops towards the target. It does not show the route from your computer or automatically reveal the return path.
A hop is a station along the observed IP path. Its time belongs to the reply to that probe, rather than the extra delay since the previous hop. Do not subtract adjacent values to calculate link latency. An asterisk means that no matching reply was received for that attempt. If later hops respond, traffic can still be passing through the silent station.
The check uses at most 20 hops, a runtime of about 25 seconds and one UDP probe per hop. Filters, reply rate limits and changing paths can leave gaps. A partial route does not prove an outage. Reaching the target does not establish that HTTPS, email or another application works.
Use TCP ping for a specific port and the HTTP check for a website. Investigate displayed AS numbers with the ASN lookup; they do not replace a measurement of the actual application.
Read traceroute results: examples, asterisks and common mistakes.