You have to dial a different prefix from Mexico.
Keep in mind that the calls are not free like they are in the US; you will be charged the usual international direct dial rate.
To call a US toll free number from Mexico, dial as follows:
800 numbers Dial 001-880-then the number
866 numbers Dial 001-883-then the number
877 numbers Dial 001-882-then the number
888 numbers Dial 001-881-then the number
Mexico is homologating its emergency services to a 911 number. Nowadays, it only works for cities on the following states: Baja California, Coahuila, Colima, Chiapas, Chihuahua, Durango, Guanajuato, Morelos, Nayarit, Nuevo Leon, Oaxaca, Quintana Roo, Sonora, Tlaxcala, Puebla and Zacatecas. The remaining states still use the 066 or 088.
By the end of June 2017, all Mexico should be able to use the 911 as emergency services phone number.
No, 911 is a special case. You just dial 911, even if you dial area+number or 1+area+number for other local calls.
Dial 911.
Yeah, dial 911!
Dial 911
There aren't any charges to dial 911.
Call 911 before you start CPR.
Dial 911
If in USA dial 911 If in India dial 100
depends what country you are in. For example, in the UK, you would dial 999 and in the USA you would dial 911.
dial 911 and select cops
In America, you dial 911.
911