Route completeness
A responding target hop and a mostly observed path distinguish a usable RTT bound from an unexplained timeout.
Experimental instrument · Network location
Geography by round-trip time.
Send traceroutes from a world probe cohort, retain the fastest observation from each source, and watch the plausible geography become professionally narrower.
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MeasurementNot started
Prior policyMinimum observed RTT
Global trace awaiting authorization
Run the measurement to place source probes and construct latency envelopes.
Source probe Selected hop envelope Final RTT bound Estimated terminus
Usable probes00Awaiting measurement
Fastest prior—No prior
Median prior—Minimum final-hop RTT
Estimated terminus—Not estimated
Trace confidence—Awaiting path evidence
Source register0 usable
ProbeMinimumTrace evidence
No source priors yet.
Selected traceNo probe
Select a source after the first measurement to inspect its nested hop envelopes.
Why traceroute, not only ping?
Ping draws the circle. Traceroute tells us whether the circle deserves a confident line weight.
Delay localization
Hop timing shows whether latency appears gradually or arrives in one routing jump. It explains a loose bound; it does not turn that bound into distance.
Path stability
Reruns retain the minimum RTT while tracking route fingerprints. Stable ingress evidence raises confidence; route churn lowers it.
Topology corroboration
Shared late hops across independent sources can identify a common ingress network. A separately geolocated ingress could later become another spatial anchor.