How to dial American toll free 1-800 #s from Mexico

Mexico has its own series of 800 numbers, so in order to make dialing U.S. numbers possible, they came up with a simple system.  Simple - once you know the secret...

To dial a United States 800 number FROM Mexico, replace the 800 prefix with the prefix shown below:
 For 1-800 numbers Dial 001-880-then the number
 For 1-866 numbers Dial 001-883-then the number
 For 1-877 numbers Dial 001-882-then the number
 For 1-888 numbers Dial 001-881-then the number

For example, to call Wells Fargo's customer service FROM Mexico we change the number
from 1-800-869-3557 to 001-880-869-3557  and to dial Blue Shield FROM Mexico we change the number
from 1-888-568-3560 to 001-881-568-3560.

I hope this helps!