AT&T customers experienced a “nationwide issue” that prevented them from making calls to non-AT&T users, the company announced Tuesday.
The issue was resolved around 8:30 p.m., more than seven hours after users reported being unable to make calls.
“The interoperability issue between carriers has been resolved. We are working with other carriers to find a solution and thank our customers for their patience during this time,” a company spokesman told the Post.
AT&T has backtracked from its initial statement that the issue affected users across the country, clarifying that its network is not experiencing a nationwide outage.
The company confirmed that the issue only affected calls between carriers and did not affect communications between AT&T customers, including calls to 911.
AT&T didn’t provide any further details about the situation, but Downdetector, which tracks outages for all kinds of communications and online services, found that customers began reporting issues around 1 p.m.
The website said that by 5 p.m. more than 3,000 issues had been reported to the website, 90 percent of which were related to mobile phone problems.
Down Detector lists New York City, Chicago, Philadelphia and Dallas as the cities with the most complaints.
Officials in Camden County, New Jersey, warned AT&T customers on social media that the outage could prevent them from calling 911.
The company is under investigation by New York Attorney General Letitia James and the FCC over a separate outage in February that lasted for up to 12 hours.
