In The Burning Crusade it is item level 159 and requires level 70. In Wrath of the Lich King it is item level 159, requires level 70 and sells to vendors for 1c. In MoP Classic it is item level 159, requires level 70 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Guardian's Dragonhide Belt Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Guardian's Dragonhide Belt suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 10 items nearest to Guardian's Dragonhide Belt (item level 34) in item level among Armor > Leather, Waist slot, from item level 29 to 39.
Blizzard numbers items as they are created, so the named items next to ID 35152 (35147 to 35157) were usually added in the same batch as Guardian's Dragonhide Belt: the same quest line, zone, vendor or reward set.