T-Mobile US
●operational
T-Mobile US publishes no machine-readable status page, so nothing here is the company speaking. This is measurement: what independent observation sees of reachability to AS21928 in US, via IODA at Georgia Tech, 2 d ago.
Readingoperationalmeasured, not reported
NetworkAS21928North America
IODA alertnonelast 24 h
Detected by—nothing firing
What this can and cannot tell you. It sees whether the network is reachable from the wider internet. It cannot see whether your own phone has signal, whether a single city is affected, or why. A carrier can be perfectly reachable at the ASN level while a local cell site is dead.