I personally trained my ranger from 60-80 Range at Anukos.
» Ankous
Hitpoints: 75-82-86
Max Hit: 8
Race: Undead
Members: No
Quest: No
Slayer Monster: No
Nature: Aggressive
Attack Style: Melee
Examine: A boney ghost.
Drops:
Keep
Up to You or you can Eat
Leave
Skull left half
Coins
Bones
Death runes
Law runes
Adamant arrows
Noted Mithril ores
Black robe
Uncut gems
Blood runes
Noted Pure essence
Noted Rune essence (F2P Servers)
Black knife
Grimy herbs (Up to Ranarr)
Weapon poison
Fried mushrooms
Bass
Nature talisman
Watermelon seeds
Strawberry seed
Ranarr seed
Tarromin seed
Limpwurt seed
Wildblood seed
Battlestaff
Spirit Weed seed
Snapdragon seed
Half of a key
Shield left half
Dragon spear
Rune javelin
Clue scroll (level-3)
There are several safe spots in the lowest level of the Stronghold of Security which can be manipulated to easily kill Ankous and other monsters which haunt the area.
Fourth floor SOS. Attack Ankous, because they can give you high cash in drops, or go to a region with ankous and ghosts, and you’ll level up quicker than you can bend down and touch your toes. They auto attack upto a certain level, and can hit high. Ankous have a good amount of health and low defence, everything you want. Just remember to bring a good load of food. On an average at Level 100, ankous will give you 20k xp in half an hour, and per 2 hours account for 100k worth of drops. That’s 80k xp and 100k $pure gold$.(P2P) Probably half that for F2P