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A large chunk of the internet dropped offline on Thursday. Some of the most popular sites, apps and services on the internet were down, including UPS and FedEx (which have since come back online), Airbnb, Fidelity, and others are reporting Steam, LastPass, and the PlayStation Network are all experiencing downtime.

Many other websites around the world are also affected, including media outlets in Europe.

What appears to be the cause is an outage at Akamai, an internet security giant that provides networking and content delivery services to companies. At around 11 a.m. ET, Akamai reported an issue with its Edge DNS, a service thats designed to keep websites, apps and services running smoothly and securely.

DNS services are critically important to how the internet works, but are known to have bugs and can be easily manipulated by malicious actors. Companies like Akamai have built their own DNS services that are meant to solve some of these problems for their customers. But when things go wrong or theres an outage, it can cause a knock-on effect to all of the customer websites and services that rely on it.

Akamai said it was actively investigating the issue, but when reached a spokesperson would not say if its outage was the cause of the disruption to other sites and services that are currently offline. A spokesperson for ThousandEyes, an internet monitoring company bought by Cisco in 2020, attributed the outage to Akamai.

Akamai would not say what caused the issue but that it was already in recovery.

We have implemented a fix for this issue, and based on current observations, the service is resuming normal operations. We will continue to monitor to ensure that the impact has been fully mitigated, Akamai told TechCrunch.

In a follow-up tweet, the company said it was not a result of a cyberattack.

Its not the first time weve seen an outage this big. Last year Cloudflare, which also provides networking services to companies around the world, had a similar outage following a bug that caused major sites to stop loading, including Shopify, Discord and Politico. In November, Amazons cloud service also stumbled, which prevented it from updating its own status page during the incident. Online workspace startup Notion also had a high-profile outage this year, forcing the company to turn to Twitter to ask for help.

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A DNS outage just took down a large chunk of the internet - TechCrunch