AT&T customers facing ‘nationwide issue’ impacting their ability to call non-AT&T users

AT&T customers are experiencing a “nationwide issue that is affecting” their ability to call non-AT&T users, the company said in a statement.

“The carriers are working as quickly as possible to diagnose and resolve the issue,” AT&T said.

The company later said that it erroneously sent out a “wireless impact notification” to 9-1-1 call centers during the outage.

“Nationwide 9-1-1 Services are operating normally at this time and our customers are not affected,” AT&T said in a statement around 5:20 p.m. ET.

Verizon said its network is working normally but some of its users, mostly in the Northeast and Midwest, “are experiencing issues when calling or texting with customers served by another carrier.”

This is a developing story. Please check back for updates.