Area Code 717 – Estado de Mexico

Overview of Area Code 717 (Mexico)

Area code 717 is a geographic National Destination Code (NDC) assigned to the Estado de México (State of Mexico), one of the 32 federal entities of Mexico. This code serves a portion of the state's territory, distinct from the codes used in Mexico City (55) and other parts of the state. Specifically, 717 covers municipalities in the eastern and northeastern part of the State of Mexico, including areas such as Texcoco, Chimalhuacán, Chicoloapan, and Los Reyes Acaquilpan. The region is part of the greater Mexico City metropolitan area but maintains its own numbering plan due to administrative and telephony routing requirements.

Dialing Formats and Procedures

When dialing a number within the 717 area code from another part of Mexico, you must use the national long-distance prefix 01 followed by the area code and the local 7-digit subscriber number. For example, to call a landline in Texcoco from Guadalajara, you would dial: 01 717 123 4567. For international callers, the format is: +52 717 123 4567 (the plus sign replaces the international access code, e.g., 011 from the US/Canada). Local calls within the same area code do not require the long-distance prefix; you can dial the 7-digit number directly. However, due to the expansion of the numbering plan, some areas may have 8-digit local numbers; always verify the number length before dialing.

Geographic Coverage and Administrative Jurisdiction

The 717 code is assigned to the State of Mexico, which is the most populous state in the country. The specific municipalities served by 717 include Texcoco, a historic city and former Aztec capital, and Chimalhuacán, one of the most densely populated municipalities in Mexico. Other localities such as Chicoloapan, Ixtapaluca (partially), and La Paz (Los Reyes) also fall under this code. The region is characterized by a mix of urban and semi-rural areas, with significant residential and commercial activity. The code is managed by the Instituto Federal de Telecomunicaciones (IFT), Mexico's telecommunications regulator, and is allocated to fixed-line operators such as Telmex, Axtel, and others.

Overlays and Numbering Changes

As of the latest IFT updates, there is no overlay for area code 717; however, the State of Mexico has multiple area codes (e.g., 55, 56, 59, 722, 729) to serve its vast territory. Callers should be aware that mobile numbers in Mexico are not tied to geographic area codes; they use the national mobile prefix 1 before the area code when dialed from a landline, but from a mobile phone, you simply dial the 10-digit number (area code + subscriber number). For example, a mobile number in Texcoco might be 044 717 123 4567 when dialed from a landline within Mexico, but from a mobile, you would dial 717 123 4567.

Practical Tips for Callers

For local callers: always include the area code when dialing from a different area code. For international callers: use the country code +52 and drop the leading 0 of the national prefix. If you are using VoIP services, ensure you dial the full international format. For emergency services, dial 911 (national emergency number) regardless of the area code. For directory assistance, dial 040 (national) or consult online directories.