An internet outage took X, formerly Twitter, and several other websites offline the morning of Nov. 18.

Users of those websites were met with a screen that said an error with Cloudflare was to blame. Cloudflare is a service that provides tools to websites that protect them from cyber attacks and keep them online during times of heavy traffic, The Independent reports .

Downdetector , which monitors internet outages and was itself hit by the Cloudflare outage shows a sharp spike in outage reports around 7 a.m. that quickly fell off. By 7:15, several thousand people were still reporting issues.

Here's what to know.

What is a Cloudflare error? What is challenges.cloudflare.com?

According to Cloudflare's status page , the service experienced a degredation at about 6:48 a.m. Nov. 18, c

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