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Тульская духовная семинария
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Breaking Down the Mexican National ID Number

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

Naming Conventions in Latin America

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

A person’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, comparable to Francisco Enrique.

The given name is adopted by the paternal surname, then the maternal surname. Paternal and material surnames can be compound, however this is less common.

For example, let’s look at professional Mexican soccer player Rafael Márquez Álvarez. The U.S. Division of the Treasury sanctioned him in 2017 for serving as a frontman and holding assets 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 is structured as follows:

Four letters from the person’s authorized name: – First letter of the paternal surname – First internal vowel of the paternal surname – First letter of the maternal surname – First letter of the given name
Six numbers which are the individual’s date of birth in YYMMDD format
One letter describing the person’s gender: «H» for male (hombre) and «M» for feminine (mujer)
Two letters which are the two-letter state abbreviation for the state the place the particular person was born; if the person was born outside of Mexico, the abbreviation «NE» shall be used for Nacido en el Extranjero (born abroad)
Three letters from the particular 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 among individuals who have related names, places of birth, 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 people born since 2000
One character that is a checksum

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