Tests run on the always-on probe at home (wired, behind your router), so results reflect the fibre line — not the phone's Wi‑Fi or mobile data. Use “This device” below for that.

Measures between the device you're holding and the probe. At home this isolates your Wi‑Fi/LAN; away from home it's the path from your current network to home.

Test this device

Destination RTT & hop count · 7 days

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• iperf3 / TWAMP to your own VPS — a controlled far-end in London, Frankfurt and Virginia removes CDN variability and allows UDP loss/jitter at fixed rates.
• RIPE Atlas probe — host one and pull its built-in measurements for an independent view of the line.
• Router telemetry — SNMP/Prometheus from the router for WAN octet counters, so tests can subtract concurrent household traffic.
• Alerting — push to phone/Telegram on outage, loss > 1 %, or RTT step change (CUSUM).
• UDP game/VoIP simulation — 50 pps small-packet streams to measure one-way delay variation with ECN marks.
• L4S / ECN readiness — check whether paths preserve ECT(1) and CE marks.
• Per-ASN view — latency grouped by transit/peer to spot a single bad upstream.