Perú (PE)

Documents

Code	Scope	Length	Check digit	Confidence
PE_DNI	personal	8 digits	none (printed); optional 9th letter (RENIEC internal)	low
PE_CE	personal	9-12 digits	none documented	low
PE_RUC	tax	11 digits	mod-11 SUNAT	high

PE_DNI — Documento Nacional de Identidad

Overview

Primary identity document for Peruvian citizens. Issued by RENIEC. The DNI Electrónico (DNIe) keeps the same 8-digit number on a smart card with chip.

• Issuer: RENIEC — https://www.reniec.gob.pe/
• Composition: 8 sequential digits (no embedded structure)
• Visual format: contiguous digits, no separators

Algorithm

None on the printed number. RENIEC internally maintains a 9th-character "dígito de verificación" (a letter) that is exposed by the consulta-DNI API. The algorithm is a Vigesimal Modular check derived from the 8 digits, but it is not part of the canonical stored DNI — most government systems accept and store the 8-digit form alone.

If a future caller needs to validate the optional 9th letter, the algorithm is:

weights = [3, 2, 7, 6, 5, 4, 3, 2]
sum     = sum(digit_i * weight_i) for i in 0..7
r       = sum mod 11
v       = (11 - r) mod 11
letter_table = "K0123456789"
expected_letter = letter_table[v]   # 0->K, 1->0, 2->1, ..., 10->9
Copy

This is not validated by PE_DNI.validate() because callers almost never receive it.

Sources

• RENIEC: https://www.reniec.gob.pe/
• Ley 26.497 (Ley Orgánica del RENIEC).
• Optional 9th-character algorithm: RENIEC public API (consultas-dni) and reverse-engineered by community libraries.

Synthetic test vectors

valid:
  - 12345678
  - 47852136
  - 00000001
  - 99999999

invalid (format):
  - 1234567        (7 digits)
  - 123456789      (9 digits — DV may be valid but spec accepts 8 only)
  - abcdefgh       (non-digits)
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Recent reforms

• DNIe rolled out 2013-onwards; same 8-digit number, additional cryptographic chip.

Open questions

• ADR — should the optional 9th-letter form be a separate spec (e.g. PE_DNI_VERIFIED)? Currently the 8-digit form is canonical. If consumer demand grows, expose a validateWithLetter() helper.

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PE_CE — Carné de Extranjería

Overview

Identity document for foreign residents in Peru.

• Issuer: Migraciones Perú (Superintendencia Nacional de Migraciones) — https://www.migraciones.gob.pe/
• Composition: 9-12 sequential digits
• Visual format: contiguous digits

Algorithm

None publicly documented. Migraciones validates online.

Sources

• Migraciones: https://www.migraciones.gob.pe/

Synthetic test vectors

valid:
  - 123456789
  - 1234567890
  - 12345678901
  - 123456789012

invalid (format):
  - 12345678         (8 digits — too short)
  - 1234567890123    (13 digits — too long)
Copy

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PE_RUC — Registro Único de Contribuyentes

Overview

Tax identifier issued by SUNAT. Identifies both individuals (with prefix 10) and legal entities (with prefix 20).

• Issuer: SUNAT — https://www.sunat.gob.pe/
• Composition: 2-digit prefix + 8-digit body + 1 digit DV
  • 10 — persona natural con negocio (DNI + 1 dígito + DV)
  • 15 — sucesión indivisa
  • 16 — no domiciliado especial
  • 17 — no domiciliado
  • 20 — persona jurídica
• Visual format: 11 contiguous digits, no separators

Algorithm

mod-11 with weights [5, 4, 3, 2, 7, 6, 5, 4, 3, 2] over the first 10 digits.

weights = [5, 4, 3, 2, 7, 6, 5, 4, 3, 2]
sum     = sum(digit_i * weight_i) for i in 0..9
r       = sum mod 11
dv      = 11 - r
   if dv == 11 -> 0
   if dv == 10 -> 1
   else        -> dv
valid iff dv == digit[10]
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All-same-digit sequences (11111111111, 00000000000) are rejected as placeholders.

Sources

• SUNAT: https://www.sunat.gob.pe/
• Decreto Legislativo 943 (RUC Ley).
• Resoluciones de Superintendencia SUNAT (formato y prefijos).
• Cross-validated against peru-ruc (npm) and python-stdnum stdnum.pe.ruc.

Synthetic test vectors

valid:
  - 20100070971    (prefix 20 jurídica)
  - 20123456786    (prefix 20)
  - 20998877661    (prefix 20)
  - 10123456780    (prefix 10 persona natural)
  - 15123456782    (prefix 15 sucesión indivisa)
  - 16010203043    (prefix 16 no domiciliado especial)
  - 17123456785    (prefix 17 no domiciliado)

invalid (format):
  - 2010007097     (10 digits — too short)
  - 201000709712   (12 digits — too long)
  - 30123456780    (prefix 30 — invalid)
  - 11123456789    (prefix 11 — invalid)
  - 11111111111    (all-same-digit placeholder)

invalid (checksum):
  - 20100070970
  - 20123456780
  - 10123456789
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Recent reforms

• No format changes since the published algorithm. Prefix 16 was added for "no domiciliados especiales" via Resolución de Superintendencia.

Open questions

• None on the algorithm. Prefix list is derived from SUNAT's published Tabla de Tipos de Contribuyentes.

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PE_PASAPORTE — Pasaporte

Overview

Travel document issued by the Superintendencia Nacional de Migraciones. Most current sources report 1 uppercase letter + 8 digits (9 chars); legacy 9-digit numeric and 8-char alphanumeric variants also circulate.

• Issuer: Migraciones — https://sel.migraciones.gob.pe/servmig-valreg/VerificarPAS
• Composition: optional 1 letter + 8-9 digits (lenient union)
• Visual format: contiguous chars

Algorithm

None on the printed number. MRZ check digit lives in algorithms/icao-9303.ts.

Confidence

low — sources contradict on the letter prefix.

Sources

• Wikipedia, Pasaporte peruano: https://es.wikipedia.org/wiki/Pasaporte_peruano
• Migraciones (verificación): https://sel.migraciones.gob.pe/servmig-valreg/VerificarPAS