Charter Communications said the company is working to restore service after an internet outage affected customers across the country on Saturday.
According to DownDetector.com, a website dedicated to real-time availability of internet services, outages were reported since Saturday afternoon.
Outages were reported in the Asheville and Anderson/Greenville/Spartanburg area, along with several other metropolitan areas across the country, according to the website.
Charter spokeswoman Kim Haas said the company is working to restore service and says the cause is unknown. She said the issues were "intermittent across parts of our footprint."
Haas said she could not provide any further details.
Stamford, Connecticut-based Charter is the fourth largest cable operator in the U.S., according to its website. It also provides phone services and serves customers in 29 states.