Earthrise uses TSIC for hosting
One of the attributed reasons for the lack of performance for Earthrise at launch was that their original deal for hosting the game did not happen and that they had to run the game on their beta test servers. I do not know if that is true, but now it seems they have signed a deal with TeliaSonera International Carrier for hosting Earthrise for them.
TSIC has a good track record and have Blizzard+Activision as prominent customers, so presumably the situation should get better for the game. It does not say when this will take effect though.