637 Area Code Mexico

Where is 637 area code in Mexico?

The 637 area code in Mexico corresponds to telephone numbers located in Sonora.

This means that if you wish to make a call to a phone number in the region of Sonora or or receive a call from this area, the phone number would have the local prefix 637.

Does the 637 area code always have the same location?

Yes, this telephone prefix always has the same location, i.e in this case will always be a telephone located in Sonora in Mexico.

Today's mobile phones usually automatically indicate the location from which the call was made, but older phones do not. In this case, if you receive a call or need to place a call to a phone with a 637 dialing code and you ask yourself: Where is the 637 area code in Mexico?, the answer will be Sonora.

How to call from abroad to a phone located with area code 637?

To call a telephone from abroad using this prefix, you must dial the México country code (+52), the dialing code  and the local telephone number you wish to call. In other words, you must dial:

+52 637 [Phone number]

It should be remembered that all calls from one country to another country, for example calling from outside the Mexico to a 637 area code phone number, will have a higher cost than calls made in the same country. The final cost of the call will be defined by the telephone company with which the call is made.