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Americans wake to widespread cellular outages, cause unclear
(www.theregister.com)
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This is the best summary I could come up with:
Updated Residents of the United States woke this morning to find widespread outages in cellular service, with AT&T bearing the brunt of a seemingly nationwide issue.
T-Mobile US and Verizon, the other two major cell network operators in America, have also seen widespread outage reports, though far fewer in number than AT&T.
With most of the reports pertaining to AT&T, and T-Mo and Verizon's denials of anything wrong on their end, the outage appears to be an AT&T issue, which the carrier has confirmed.
A map of AT&T outage reports shows several major metropolitan areas are affected at the time of publication, including Atlanta, Dallas and Houston.
Many of those towers were purchased from AT&T, Verizon and T-Mobile, making even the largest US cellular providers look more like the small virtual network operators their hardware has classically supported.
Cloudflare has a graph showing a significant drop off of IPv4 and IPv6 connectivity for AT&T, leading some network administrators to speculate it's a BGP issue.
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