Several major companies were affected by a widespread web outage mid-day Thursday.

Companies such as Costco, Home Depot, Airbnb, British Airways, Delta Air Lines, Capital One, Go Daddy, Vanguard, UPS, LastPass, AT&T, and American Express were impacted by the outage as their sites were slow loading or showed a “DNS failure,” Reuters and CNBC reported.

As of 1:45 p.m. ET, there have been no reports as to the cause of the outage.

Content distribution network Akamai said it was aware of the issue and was investigating an “emerging issue with the Edge DNS service.”

Cloud service provider Oracle told CNBC it was “monitoring a global issue related to Akamai edge DNS that is impacting access to many internet resources, including Oracle cloud properties.”

However, it said its resources within its cloud service were not impacted by the outage.

The outages seemed to be localized, but it is not clear as some users were able to access the company sites while others were not.

Sites were back up and running just after 1 p.m. ET, according to Akamai.

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