Sorry, my last post on bypassing IP Bans contained "Illeagle" files which I did not know I was not aloud to post. Now, I'm just going to give you a guys a great program, which can help you bypass IP Bans.
First off
1. Download G-Pass, Thank you for downloading GPass from Download.com
2. After downloading, add WoW to G-Pass.
3. Go under the Applications tab, click Add+
4. Put the name if you desire(Not needed). For the program path you can click the browse and find your WoW exe file(or shortcut)
5. Than click OK and it should have been added!
6. Open WoW from the GPass application window.
7. Now you can log into the server won't detect your IP that HAS been banished.
I had other programs but they required Cracks which is not aloud on the forums! Although this program will work out just fine, hope I helped!