Multiple websites operated by news outlets including the Financial Times, CNN, and Bloomberg News were down across the globe on Tuesday, Al Jazeera reported.
Qatar-based Al Jazeera Media Network was also affected.
France’s Le Monde newspaper started showing error messages that appeared on the website at around 10:00 GMT.
Separately, Amazon.com Inc’s retail website also seemed to face an outage. Amazon was not immediately available to comment. Britain’s Guardian newspaper said its website and app were affected.
Sites of some other British news media were also not immediately loading. The UK government’s main website too was unavailable.
The BBC and The New York Times were temporarily inaccessible, but later returned. Messages such as “Error 503 Service Unavailable” and “connection failure” appeared.
The issue affecting the websites was not immediately clear. San Francisco-based Fastly – a cloud service company used by many media – acknowledged a problem just before 10:00 GMT. It said in repeated updates on its website it was “continuing to investigate the issue”.
Visitors trying to access CNN.com got a message saying: “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.”