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Traceroute Reader
Paste traceroute, tracert, or mtr output and get the path interpreted: where sustained loss actually starts, which hops are only dropping probes cosmetically, whether a latency jump is distance or a fault, and where your network ends and the carrier's begins.
All three formats are recognised. Parsed in your browser; hop ownership lookup is opt-in and explained below.
Method & assumptions
- Loss at a single hop is usually not loss. Routers deprioritise generating ICMP TTL-exceeded replies, so a busy core router drops your probes while forwarding real traffic fine. Only loss that persists to the destination is counted here.
- Latency that steps up once and stays up is the length of a leg. Latency that spikes at one hop and drops again at the next tells you how quickly that router replies to probes, which is unrelated to how it forwards traffic.
- A trace that stops short usually means a firewall is dropping probes somewhere along the way. Confirm with a TCP probe to the real service port before treating the path as broken.
- 100.64.0.0/10 is carrier NAT: addressing the ISP runs internally. It looks private and behaves like someone else's network, because it is.
- Parsing happens in your browser. Hop ownership lookup is the one exception: pressing that button sends the public hop addresses to RIPEstat via this site. Nothing else is transmitted, and the analysis works without it.
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