Same here in North Austin (78753). Others are reporting issues in other parts of TX and Louisana:
Even scarier, calling *2 and 888-211-4727 resulted in "Number unavailable", although I can call other numbers with no issue. My guess is that Sprint has a regional outage and their customer service is flooded with calls.
North Austin/Round Rock. It's still going in and out here. It was gone for an hour or so, then it was back again for a little while, then gone again, now it seems to be working. That is, if you consider 0.19mbps down/0.03 up with a 724ms ping to be "working". I suppose it's better than nothing. So fail.