Update: Comcast internet restored after being down Monday afternoon

The downdector.com outage map for Comcast Corp. screamed red for downed and slow internet on Monday afternoon.

Camera icon downdetector.com
The red on this downdetector.com map showed the areas with reported Comcast Xfinity internet problems on Monday afternoon.

Comcast, the nation’s largest residential internet provider, acknowledged the dodgy internet and pointed to connection issues with telecom backbone provider Level 3. Level 3 said it fixed the problem.

Comcast subscribers in Denver, Portland, San Francisco, Houston, Minneapolis, and Boston reported the slowest speeds and most outages. A Reading man said on downdetector.com that his internet had been slow in the afternoon but speeds had improved.

Comcast said on Twitter at 1:36 a.m. on Monday that “some customers are having issues their Xfinity internet service.”

At 5:34 p.m., Comcast tweeted that its service was restored.

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