Thursday’s nationwide outage affected thousands of Americans as wireless carriers such as AT&T, Cricket Wireless, Verizon and T-Mobile and other providers scrambled to fix the issue.

Customers of AT&T, the country’s largest wireless provider, are reporting widespread outages.

AT&T says the hourslong outage to its U.S. cellphone network appeared to be the result of a technical error, not a malicious attack.

A number of Americans are dealing with cellular outages on AT&T, Cricket Wireless, Verizon, T-Mobile and other service providers, according to data from Downdetector.