Problems connecting to Blizzard Games

I am having difficulty connecting to everything related to Battle.Net. This includes Starcraft II, World of Warcraft, and Diablo III. All of my other internet functions are fine. Voice connection programs (Teamspeak, Skype), browsers (Chrome, Firefox), and all of my other online games (Star Trek Online, MechWarrior Online, etc), are all working fine. I have spoken to Blizzard (The company responsible for Battle.Net), and they have told me that they have provided you with some information on the potential problem(s) that may cause the issue.

Any information you can give me regarding this issue?