(NEXSTAR) — In what may feel like déjà vu for some, customers with AT&T and Verizon reported issues with their phone service Tuesday, especially when it comes to trying to call one another.

Problems began for AT&T and Verizon customers around noon CT and climbed throughout the afternoon before peaking around 4:15 p.m. CT, according to user reports on DownDetector.

Later in the evening, AT&T posted a statement on X, formerly Twitter, saying that “the issue disrupting calls between carriers has been resolved.”

“We collaborated with the other carrier to find a solution and appreciate our customers patience during this period,” the statement continued.

AT&T also clarified that while the issue affected calls between carriers, it did not affect calls between its customers.

A notice from Verizon said that while its network is operating normally, “some customers, primarily in the Northeast and Midwest, are experiencing issues when calling or texting with customers served by another carrier. We are continuing to monitor the situation.”

DownDetector also showed user-reported problems with Cricket Wireless, which is owned by AT&T, as well as Consumer Cellular and US Cellular.

However, reports of outages have been declining throughout the evening. By 8 p.m. CT, DownDetector showed less than 350 reports of issues with AT&T Wireless, and less than 30 reports of issues with Cricket Wireless.

The issue also initially appeared to be impacting calls made to 911. Emergency authorities in Virginia said they were notified of a multi-state outage by AT&T, though the company tells CNN that the notification was accidentally triggered and sent.

Last week, Verizon customers, primarily in the Midwest and into some Western states, reported outages with their cell service. Some told Nexstar’s KRON they were unable to make any phone calls.

In February, AT&T customers dealt with an hours-long outage that left them unable to make calls or use their cellular data. Days later, AT&T said it would automatically apply a credit of $5 to the accounts of impacted customers.

That outage was believed to have been caused “caused by the application & execution of an incorrect process used as we were expanding our network,” AT&T explained in a February statement.

Neither AT&T nor Verizon has said what is causing Tuesday’s outage.

The Hill’s Tara Suter contributed to this report.