Actually further research reveals that Rogers has struck peering agreements with several Canadian ISPs, so where stuff used to go through Teleglobe, they don't any more.
They're not "under", but they are in court protection from bankruptcy. i.e. they have so much time to get their affairs in order so they might be able to resurrect themselves.
Teleglobe are still providing bandwidth into the US and curiously into the US and out for connections to Telus and Bell!!!