It's a hosting provider issue on the data center end. It's not a question of *if* it will get fixed, but *when*, as switchboard issues can have far reaching consequences to multiple client operations dependent on what's running through that switch and they'll likely have a Priority 1 status on resolving it. That said, maximized priority does not translate to expedient resolution, and there's sometimes smaller problems that crop up as the result of a larger issue that need to be untangled in the aftermath.
In short, don't panic. It's frustrating and inconvenient, but it will get resolved at some point today.