Breaking Down the Mexican National ID Number

The National ID Number or CURP (Clave Única de Registro de Población) is among the most typical ID numbers for individuals in Mexico. It’s related in use to the U.S. Social Security Number, however unlike the SSN, it is algorithmically generated using the individual’s full legal name and personal information. Understanding Mexican ID Number construction can help reveal key details about people and allow analysts to easily establish false ID numbers.

Naming Conventions in Latin America

Before we talk about the structure of CURPs, it is essential to talk about naming conventions in Latin America. In Spanish-speaking jurisdictions, names are typically comprised of three parts.

An individual’s given name, additionally known as a primary name, is either a single name, akin to Alejandra, or more commonly a compound name with two or more names, similar to Francisco Enrique.

The given name is followed by the paternal surname, then the maternal surname. Paternal and material surnames might be compound, but this is less common.

For instance, let’s look at professional Mexican soccer player Rafael Márquez Álvarez. The U.S. Department of the Treasury sanctioned him in 2017 for serving as a frontman and holding property for long-time drug kingpin Raúl Flores Hernández, the leader of the Flores Drug Trafficking Organization.

If we break down his name into its three components, his given name is Rafael, his paternal surname is Márquez, and his maternal surname is Álvarez.

Deciphering the Mexican National ID Number

The Mexican National ID Number (CURP) is an eighteen character alphanumeric code. It’s structured as follows:

Four letters from the individual’s legal name: – First letter of the paternal surname – First inner vowel of the paternal surname – First letter of the maternal surname – First letter of the given name

Six numbers which might be the individual’s date of birth in YYMMDD format

One letter describing the individual’s gender: “H” for male (hombre) and “M” for female (mujer)

Two letters that are the two-letter state abbreviation for the state where the particular person was born; if the person was born outside of Mexico, the abbreviation “NE” might be used for Nacido en el Extranjero (born abroad)

Three letters from the person’s authorized name: – First inner consonant of the paternal surname – First inner consonant of the maternal surname – First inner consonant of the given name

One character to keep away from duplicate CURPs amongst individuals who have comparable names, places of start, and dates of start; the character is a number that ranges from zero to nine for folks born before 2000 and a letter from A to Z for individuals born since 2000

One character that could be a checksum

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