iPhone texts and calls can go to the wrong number
wp.josh.com
wp.josh.com
The appleid.apple.com and iTunes device lists are also segregated from the Apple support website that has its own device list. Which appears to randomly delete stuff from my profile. With the recent revamping of their support website I checked it out, and they now only show 1 current Apple device. Not the previously listed 5 I actually have.
I don't know if I've actually found all the possible editable locations Apple device information could be stored with Apple.
[1] http://www.cultofmac.com/412432/apple-users-send-200000-imes...
As far as I know, there is no analagous VOIP routing for iphone calls: all go through the regular network. So misrouting there would be a much bigger surprise!