Dozens of major websites are down and showing error reports this morning (21 June) as a result of “service issues” from Cloudflare. The company said on its status page that the issue behind the outage has been identified and a fix has been implemented.

Social media users are reporting issues accessing many of their favourite websites and services including Amazon, Telegram, Twitch, Canva, Shopify Udemy, Coinbase and many others.

There are also reports that DoorDash, Crunchyroll, NordVPN, and Feedly are down as a result of the outage.

Cloudflare, which is the backbone of many of the web’s biggest sites, said this morning that it is investigating “wide-spread” issues with its network.

The company said that a “critical P0” incident was detected earlier today at approximately 06:34AM in Coordinated Universal Time. As a result, connectivity in Cloudflare’s network was been disrupted in “broad regions”.

“Eyeballs attempting to reach Cloudflare sites in impacted regions will observe 500 errors,” Cloudflare said on its update page. “The incident impacts all data plane services in our network.”

The impact of this outage appears similar to a Cloudflare outage in 2019, when social media was flooded with questions as to what caused such an outage across seemingly unconnected sites. In that incident, it appeared that almost every major city in the world was affected in some way, including Dublin.

35 minutes after Cloudflare implemented a fix in 2019, it revealed the source of the issue.

“We saw a massive spike in CPU that caused primary and secondary systems to fall over,” a statement said. “We shut down the process that was causing the CPU spike. Service restored to normal within ~30 minutes.”

It is possible that a distributed denial-of-service (DDoS) attack could be the cause of the latest outage, as these attacks attempt to make online services unavailable by overwhelming it with high volumes of data from multiple sources.

Last week, Cloudflare said it was able to detect and mitigate a record-breaking DDoS attack which generated 26m requests a second.

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