There are many people in the Fredericton and surrounding area and also one person from Southern Ontario having issues with connectivity to Blizzard Servers at least during peak evening hours and in some cases outside this time.
There is a thread outlining the issue here:
»us.battle.net/wow/en/forum/topic ··· 79612499
Personally I have BellAliant FibreOp 15/15 in Fredericton and I've had this issue since July 15 2012. Bascially, I get latency spikes during play. Mostly during combat/times of high activity.
This issue is ONLY with Blizzard games. I can play other online games without issue. In addition, if I use a VPN connection, I can play Blizzard games just fine. So the problem is either the route the data takes or shaping being done.
Here is an MTR report of the path to blizzard:
Initially, the finger was pointed at AT&T. Per this post:
AT&T has tested their equipment and believes all is well.
The data crosses four atonomous systems: