Xfinity Speed Test

Xfinity (Comcast) is a major US cable ISP offering DOCSIS broadband with asymmetric upload speeds. Speeds and availability vary by market.

Typical ranges: 100–1200 Mbps down · 10–35 Mbps up (varies by plan and market).

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Cable networks are shared in a neighborhood node—evening slowdowns are possible.
Upload is typically much lower than download on DOCSIS plans.
Gateway Wi‑Fi quality varies; a third-party router in bridge mode can help.

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