Wild Horse and Burro Freezemarks

The following graph illustrates how to read a freeze mark. If a mark is difficult to read, we recommend shaving the left side of the neck. You must know the freeze mark of your horse or burro before you make an inquiry to a BLM office.

Arizona 80001-160000	California 160001-240000
Colorado 240001-320000	Idaho 320001-400000
Montana 400001-480000	Nevada 480001-640000
New Mexico 640001-720000	Oregon 0-80000
Utah 720001-800000	Wyoming 800001-880000
Eastern States 880001-880100