Comcast's Xfinity internet service is reportedly down across the US

Comcast's internet service, Xfinity, appears to be suffering an outage across the country. DownDetector.com shows it being down around the United States, including inlarge cities like San Francisco, Los Angeles, and Boston. So far, online reports don't suggest that TV service or home phones are affected.
This looks bad: https://t.co/MnIJMfLjG3 pic.twitter.com/4Al33UbbE7— Eric Neustadter (e) (@thevowel) November 6, 2017Comcast confirmed the reports in a tweet on its customer care account.
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