Communications

Mexico Simplifies its Telephone Dialing Rules

The rules for dialing phone numbers in Mexico changed on August 3rd, 2019. This article explains what you need to know.

Simple Telephony

On August 3rd, 2019 dialing Mexican telephone numbers became simpler. This article explains the changes.

Service prefixes are no longer required

The fundamental change to the telephone dialing rules that took effect on August 3rd 2019 is the removal of service code prefixes associated with calling domestic long distance numbers (01) and calling Mexican cell phones from Mexican land lines (044, 045).  Also, the confusing need to add the number ‘1’ when calling a Mexican cell phone from overseas is also being eliminated.  The changes can be summed-up thus:

  • When calling from within Mexico, the dialing prefixes of 01, 044, and 045 are no longer required
  • When calling a Mexican cell phone from outside Mexico, the additional number ‘1’ after Mexico’s country code is no longer required

These changes greatly simplify the way that Mexican land lines and cell phones are dialed and bring Mexico’s telephone dialing rules into line with protocols used in the US and Canada.

Calling from/to Mexican land lines

Here are the rules for dialing from and to Mexican land lines as of August 3, 2019

Calling a Mexican land line from a Mexican land line in the same area: Dial the area code (2 or 3 digits) and then then local number (7 or 8 digits, depending on the town/city).

Calling a Mexican land line from a Mexican land line in a different area.  Dial the area code and the number.  Do not dial the 01 (long distance) prefix.

Calling a Mexican land line from a Mexican cell phone: Dial the area code and the number directly from your cellphone. Do not dial the 01 (long distance) prefix.

Calling a Mexican cell phone from a Mexican land line: Dial the cell phone’s area code and number directly.  Do not use 044 or 045 prefix.

Calling to/from Mexican cell phones

Here are the rules for dialing from and to Mexican cell phones as of August 3, 2019

Calling a Mexican cell phone from another Mexican cell phone while in Mexico: Dial the other cell phone’s area code and number. Do not include 044 or 045 in the code.

Calling a Mexican cell phone from overseas: Dial Mexico’s country code (+52) then the area code, and then the number.  Do not include the ‘1’ after the +52, as was required before August 3, 2019.

Calling any number in Mexico from a Mexican cell phone overseas (roaming): Dial Mexico’s international code +52, then the area code, and then the number. Do not include the ‘1’ after the +52.

Calling Mexican toll-free (800) and premium toll (900) numbers

From August 3rd, 2019, whether you are calling from a Mexican land line or from a Mexican cell phone, drop the 01.  Thus 01-800-123-4567 becomes 800-123-4567.

Storing numbers in your Mexican cell phone

If you roam between Mexico, the US and Canada, we recommend that you store all of your contact numbers using the international dialing format: [country code] [area code] [number]. Thus your Mexican contacts will be recorded with the +52 prefix before the area code and number, your American and Canadian contacts with the +1 prefix before the area code and number.  By doing this, your calls will connect without need for you to make adjustments regardless of whether you are in Mexico or roaming in the US or Canada.

How to keep in touch when you’re in Mexico

You can learn more about how to keep in touch with friends, family, and work contacts by connecting to our comprehensive Guide to Communications in Mexico.

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13 Comments

  1. David A Ward says

    so when in the united states how do i go about calling mexico with my mexican phone? and can i call while in the us u.s. phone numbers with my mexican phone?

    • Mexperience says

      Hi David,
      Yes, you can dial US numbers from your Mexican cell phone while roaming in the USA. You need dial +1, then the US area code, followed by the number.

  2. Doug S says

    Dear Mexperience folks, I am a little unclear on using my USA t-mobile cell phone within Mexico to call Mexican numbers. I drop the 01 or 011 prefixes and 044 prefixes? Just use 52 plus area code plus number, right?

    • Mexperience says

      Hi Doug, this will depend on how your carrier has it set-up for roaming; but to ensure calls from non-Mexican mobiles connect to Mexican numbers, you would dial +52 (Mexico’s country code) then the area code and the number. You *don’t* add the 01/011 or 044/045 prefixes. Check with your mobile provider about roaming use, and also call charges when roaming as these tend to vary depending on the provider and plan you are using.

  3. Tracey Spence says

    Using Skype to call toll free numbers in any country works.

  4. Bozly says

    What about Mexican cell numbers already stored in your phone with the 1 after the 52? Does it need to be deleted or will it still work fine?

    • Mexperience says

      You’ll need to edit any numbers that contain the additional number ‘1’ after the +52 country code, and remove the additional ‘1’ in order for those numbers to work after August 3, 2019.

  5. Steve Sims says

    I use this technique to call US toll-free numbers, from Mexico, on from my US (T-Mobile) cell phone. I pay “per-minute” for the call, but it helps in those cases where the called number does not accept international calls.

    Dial +1 plus:
    880 for an 800 number,
    881 for an 888 number,
    882 for an 877 number,
    883 for all 866 number,
    884 for all 855 number
    plus:
    the seven-digit telephone number

    • Claudia says

      I just started bough the 1-800 mystery last wek and w told by a T-mobile assistant ( dial 611) that I can dial any 800 number m m T-mobile I phone.
      It worked!

  6. Victorine LaBelle says

    What about calling from Mexico, on. A cell phone, to 800 numbers in the US

    • Mexperience says

      Dialing to 800 numbers in the US from a Mexican cell phone depends on whether the Mexican cell phone carrier allows this within the plan you have and whether the 800 number in the US/Canada accepts international calls.

      • Steve says

        On your answer to Victorine, but if your Mexican cell phone carrier allows and the 800 US/Canada accepts, how do you dial it???

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