Rikuxd

Hey guys I will be rolling an Undead Mage here soon and I was wondering what the absolute best AoE spots are to level during Vanilla and I would like to start as early as possible while maintaining optimal xp/hr. If any very experienced mages could share their locations it would be greatly appreciated. I would like to start AoE at level 22 until level 45 and I really need to know the best spots whether they're heavily contested or not is not a problem. I would like to stay in Horde/Neutral areas as much as possible. Thank you!!

Can someone provide me with the most optimal locations are for AoE grinding to level for a Horde Mage. Levels 20-30, and 30-40 are what I'm interested in.. I need to know what level to start at and which level to move onto the next area.