Spain license plate: International OI

Issued today Documented since 1999. Diplomatic plates for car, van, and motorcycle, issued by Dirección General de Tráfico (DGT). One of 19 Spain license plates.

Spain license plate, International OI (documented since 1999), sample OI-148-189

Format, years and the law

Format
OI-999-999, for example OI-148-189 (9 any digit)

OI stands for Organización Internacional, staff of international organisations based in Spain, one step from the diplomatic CD series and numbered right after it.

OI
Organización Internacional (international organisation)

The format above follows the issuing rules: a registration that fits it is one this series could have issued.

Years issued
Documented since 1999; the format is likely older than the first year documented. Still issued.
Vehicle class
Diplomatic: diplomatic corps (embassy) issuance, usually its own decode. Issued for car, van, and motorcycle.
Colours
Characters #FFFFFF Background #003399
Size
520 × 110 mm · every country's size
About this plate
ORGANIZACIONES INTERNACIONALES, blue ground, white characters. Flagged as a vocabulary gap.
How numbers are issued
group 1 is an invariable per-organisation prefix, assigned by seniority in a series running consecutively after the one reserved for diplomatic missions; group 2 is a serial within the organisation
About the format
digit-group widths are representative only; Anexo XVIII fixes neither

Legal basis and sources

  1. Anexo XVIII I.B.a).2: organizaciones internacionales, blue retroreflective ground, white matte characters, letters OI + two digit groups https://www.boe.es/buscar/pdf/1999/BOE-A-1999-1826-consolidado.pdf

This plate in your app

The series id is es-international-oi-1999. The API returns its format, validation, colours and designs with the rest of Spain's series:

curl -s https://vehiclesdb.com/api/v1/plates/es \
  -H "Authorization: Bearer $VEHICLESDB_API_KEY" \
  | jq '.series[] | select(.id == "es-international-oi-1999")'