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Telephone numbers in Mexico are regulated by the
Federal Telecommunications Institute The Federal Telecommunications Institute (Spanish Language, Spanish: ''Instituto Federal de Telecomunicaciones''; abbreviated as IFT and incorrectly referred to as IFETEL, Tzeltal language, Tzeltal: ''Snaul jtsob a’telelil Sk’asesojibal k’o ...
, an independent government agency of
Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
. The agency published the ''Fundamental Technical Plan for Numbering'' (''Plan Técnico Fundamental de Numeración'') on May 11, 2013. The plan establishes a uniform ten-digit telephone number format. It took effect on August 3, 2019.


Telephone number format

All telephone numbers in Mexico have ten digits, of which the first identifies one of the eight principal geographic regions of the country. The national number is formed by prefixing the previously existing local number format with an area code. All ten digits must be dialed for all calls.


Dialing prefixes

Since August 3, 2019, only the following dialing prefixes are available for use within
Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
:


Dialing into Mexico

Destinations in Mexico are dialed from foreign location by dialing the foreign country's International access code (''011'' within the NANP area, ''00'' in many other countries), the country code ''52'', and the ten-digit national telephone number of the destination. As of 2020, the dialing procedure for mobile phones in Mexico no longer requires the inclusion of the number '1' after the country code. The procedure for calling landlines remains unchanged.


History

Until August 3, 2019, telephone numbers in Mexico consisted of ten digits with either two-digit area codes (for
Mexico City Mexico City is the capital city, capital and List of cities in Mexico, largest city of Mexico, as well as the List of North American cities by population, most populous city in North America. It is one of the most important cultural and finan ...
,
Monterrey Monterrey (, , abbreviated as MtY) is the capital and largest city of the northeastern Mexican state of Nuevo León. It is the ninth-largest city and the second largest metropolitan area, after Greater Mexico City. Located at the foothills of th ...
, and
Guadalajara Guadalajara ( ; ) is the capital and the most populous city in the western Mexican List of states of Mexico, state of Jalisco, as well as the most densely populated municipality in Jalisco. According to the 2020 census, the city has a population ...
and their respective metropolitan areas) or three-digit area codes for the rest of the country. New area codes were assigned in the overlay format to address number exhaustion: in 2017,
Toluca Toluca , officially Toluca de Lerdo , is the States of Mexico, state capital of the State of Mexico as well as the seat of the Municipality of Toluca. Toluca has a population of 910,608 as of the 2020 census. The city forms the core of the Grea ...
and
Puebla Puebla, officially the Free and Sovereign State of Puebla, is one of the 31 states that, along with Mexico City, comprise the Federal Entities of Mexico. It is divided into 217 municipalities and its capital is Puebla City. Part of east-centr ...
and in 2018, León,
Mexico City Mexico City is the capital city, capital and List of cities in Mexico, largest city of Mexico, as well as the List of North American cities by population, most populous city in North America. It is one of the most important cultural and finan ...
, and
Tijuana Tijuana is the most populous city of the Mexican state of Baja California, located on the northwestern Pacific Coast of Mexico. Tijuana is the municipal seat of the Tijuana Municipality, the hub of the Tijuana metropolitan area and the most popu ...
. In the early development of International Direct Distance Dialing (IDDD), Mexico elected to join World Zone 5, instead of joining the
North American Numbering Plan The North American Numbering Plan (NANP) is an integrated telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1, World Numbering Zone ...
(NANP). Since the 1960s, the Bell System had already established technical infrastructure to include Mexico in the NANP routing system, and continued to maintain special dialing arrangement using NANP area codes 903 (northwest Mexico) and 905 (Mexico City) from the US into Mexico, because of high community interest into the 1980s. Use of the area codes was formally discontinued on February 1, 1991, requiring callers to use international dialing.''Telecommunications Reports''
Volume 57, Issues 1-26, page 46


Area codes

Major cities and metropolitan areas have the following codes:


Dialing prefixes prior to 2019


Other service numbers


See also

* Area codes in Mexico by code


References


External links


ITU allocations list
{{North America topic, Telephone numbers in
Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
Telephone numbers Telephone numbers