Broadband Speed, Latency & Outage Diagnostic
Diagnose whether connection slowdowns, packet dropouts, or video buffering are caused by your home Wi-Fi gateway or a regional ISP fiber trunk cut. Test using the global gold standard Speedtest® by Ookla® or our instant in-browser HTML5 engine.
Speedtest® by Ookla®
Ookla operates the world's largest independent server network with over 10,000 global testing nodes. Click below to launch the official, ad-free diagnostic suite with automated carrier peering detection.
Automatically selects the closest US carrier server (Comcast, AT&T, Verizon, Charter) for lowest TCP handshake latency.
Measures bufferbloat under heavy simultaneous upload and download load, critical for VoIP and online video conferencing.
Saturates full 10 Gbps and 1 Gbps fiber lines to test true uncapped bandwidth provided by your ISP contract.
🌐 In-Browser Multi-Thread HTML5 Test
Run an instant speed diagnostic without leaving OutageUSA.
☁️ Cloudflare Global Edge Speed Diagnostic
Tests routing and packet loss directly across Cloudflare's 330+ global edge cities.
Cloudflare Speed Test tests progressive file sizes (100KB to 25MB) to give detailed 90th percentile latency, jitter, and packet loss profiles against the closest CDN edge node in your metropolitan area.
🔍 Is Your Speed Drop an ISP Outage?
If your test indicates near-zero bandwidth or excessive latency, check your provider's live outage board: