Social media, government and news websites have come back online after a glitch at US-based cloud computing services provider Fastly caused widespread outages across the globe.

Fastly released a statement on Tuesday night confirming a global CDN disruption issue had been identified and a fix was being implemented.

RNZ's homepage went down about 9:45pm and was restored at 10:27pm.

Fastly had said it was investigating "the potential impact to performance with our CDN services", according to its website.

Most of Fastly's coverage areas were facing "degraded performance", the website showed.

Separately, Amazon.com Inc's retail website also seemed to be down. Amazon was not immediately available to comment.

Nearly 21,000 Reddit users reported issues with the social media platform, while more than 2000 users reported problems with Amazon, according to outage monitoring website Downdetector.com

Amazon's Twitch was also experiencing an outage, according to Downdetector's website.

Websites operated by other news outlets, including the Financial Times, the Guardian, the New York Times and Bloomberg News also faced outages.

Reuters/RNZ