AT&T outage not affecting Ontario, California - now, not affecting anyone

After seeing reports from WTOP and elsewhere of a nationwide AT&T outage, I successfully placed a call from Ontario, California with my cell phone. I don't have AT&T Internet service, so I can't test that. Here's the current outage map (click here for updates):

And after that, WTOP tweeted this:

ALERT: AT&T says nationwide outage has been resolved. A hardware issue caused some calls not to connect Saturday.