Me, too. I was trying to call someone who has a U.S. DID in Europe at the time, and my first thought was that GV was blocking it for, I dunno, bypassing their overseas rates, or something. I had no trouble calling it with another service provider on my 202 (for those of you who only use GV, you might consider having another provider on your device, as a backup plan).
Afterwards, I tried a few other regular U.S. numbers with GV, and they're all failing. So, it looks like I'll be paying for outbound calls until this is fixed.
At least it's not an Obihai problem.