Numerous websites were unavailable Tuesday after an apparent widespread outage at the cloud service company Fastly.

Dozens of high-traffic websites including the New York Times, CNN, Twitch and the U.K. government's home page, could not be reached. San Francisco-based Fastly acknowledged a problem just before 1000 GMT.

It said in repeated updates on its website that it was continuing to investigate the issue.

" Visitors trying to access CNN.com got a message that said: "Fastly error: unknown domain: cnn.com." Down Detector, which tracks internet outages, said: "Reports indicate there may be a widespread outage at Fastly, which may be impacting your service."

In Video: Social media, news, UK govt websites hit by major internet outage

Many websites disrupted by outage at cloud company Fastly

" Visitors trying to access CNN.com got a message that said: "Fastly error: unknown domain: cnn.com." Down Detector, which tracks internet outages, said: "Reports indicate there may be a widespread outage at Fastly, which may be impacting your service."

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Many websites disrupted by outage at cloud company Fastly

​​" Visitors trying to access CNN.com got a message that said: "Fastly error: unknown domain: cnn.com." Down Detector, which tracks internet outages, said: "Reports indicate there may be a widespread outage at Fastly, which may be impacting your service."

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" Visitors trying to access CNN.com got a message that said: "Fastly error: unknown domain: cnn.com." Down Detector, which tracks internet outages, said: "Reports indicate there may be a widespread outage at Fastly, which may be impacting your service."