No such thing, and I believe you already knew the answer to this reported for abuse...
The best npc to fight for any combat experience (exc. mage/ranged) would be the Giant Spiders (Level: 50) on the third level of the Stronghold of Security, these can hit up to 70 health and are threatening for players under level 75. If you bring a super set (super attack, strength, defence) and are 80+ combat you can expect rates of 45-60k experience in agressive/defensive/accurate styles.
if your a level 12-15 rouge or a little higher, you can run the deadmines with like a 3 person group, and get amazing drops for your level such as thiefs blade. the npc's there are like level 20 with bosses with up to 4000 health. you might want to have like a lvl 80 to run u through for like 1 gold. if your level 80 some instances are at northwind and usually alot of people run it with you.
there isn't a level 80, it only goes to level 30.
Level 80 is the highest level you can reach before you prestige.
about level 80+
Level 80.
The highest level Is 80.
I have a blood sugar level of 80 and feel shaky, what should I do?
12.20.2011 - The Max. level is at Level 80...
Level 80! :D
80
80+