Comcast now has the largest gigabit network

Comcast Corp. has broken the national gig barrier. The Philadelphia company says it can now offer gigabit speeds to nearly all of its residential and business customers.

About 58 million homes across the cable giant's 39-state footprint can now order Comcast's Xfinity Gigabit service, which can cost $100 to $160 per month depending on the region, more than double the price of slower broadband plans. The carrier also offers limited-time, promotional rates of $90 per month for new gigabit customers.

Comcast's gigabit cable relies on DOCSIS 3.1 technology to deliver download speeds of up to 1,000Mbps, though Comcast notes that speeds will vary based on network traffic and "actual download speeds might be limited to 940Mbps due to Ethernet technical limitations." Upload speeds are still limited to a comparatively paltry 35Mbps.

"One of the ways that we compete, of course, is ensuring that we've got the fastest and the most reliable network," Matt Strauss, executive vice president of Xfinity Services at Comcast said. "What's partly behind the announcement is reinforcing that now we have one gig deployed across our entire footprint."

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