SpainDNI
Also known as: Documento Nacional de Identidad
Specification
Format
This number has no simple display mask — its structure is defined by validation rules. See the references below for details.
- Length
- 9 characters
- Checksum
- Yes
Check digits are recomputed and verified.
- Embedded data
- No
This number encodes no extractable personal data.
Ready to check a number?
Validate a Spain DNI now — it runs in your browser and the number never leaves your device.
Try it in the validatorValidation rules for Spain come from the open-source idnumbers library. Report a format issue on GitHub