From July 18 at consumerist.com:
Folks, a couple of thing to keep in mind:
1) SunRocket was not officially a phone company at all. Technically, this means they are not subject to LNP rules (in fact, check your customer agreement w/ them…it says clearly that they *may* allow you to take your number with you, but are not obligated to do so).
Think of this as it applies to eFax or all the free phone # services. The entities that provide those services AREN’T PHONE COMPANIES. As LNP is telecom-specific, “Your” #s belong to them, not to you.