Postal reference data

Normalize your postal addresses with postal reference data

Hexaposte - Hexavia - Hexaclé - Hexaligne3 - Cedex - Roudis 2000


HEXAPOSTE contains:

  • All postcodes (6,300) and communes (36,600)
  • All CEDEX codes (21,000) and CEDEX distributor offices serving 180,000 businesses
  • INSEE municipal codes
  • The 2000 so-called main localities (former communes ...)


HEXAVIA lists the 2,100,000 roads in the 36,600 communes in France, together with their synonyms (former name, local name).

Each road wording in the reference data file is divided into three parts:

  • The key word of the road: last word of the road
  • The full wording of the road
  • The type of road


HEXACLE contains 17 million codes distributed as follows:

  • 15 million codes identifying geographical addresses with road numbers
  • 2 million codes identifying:
    • the wording of the roads, whether or not they are numbered
    • the geographical key: invariant code, consisting of the INSEE code and 5 alpha-numeric characters, incremented by a counter


HEXALIGNE3 lists more than 535,000 address supplements in France and includes all elements relating to the exterior of the building: entrance, building, property, residence, etc., and covers high-rise housing or real estate complexes.


CEDEXA is used to check the CEDEX addresses of companies and to make corrections based on their geographical address.

The CEDEXA data file contains 180,000 addresses and is indispensable for B2B activities.

CEDEXA is an informatic file that make a list of complete address in geographic and geopostal size for french companies which have a CEDEX code.


The ROUDIS national reference data file contains the distribution codes (postmen’s rounds) of the communes of France. This information is extracted from La Poste’s production data to optimise mail distribution

  • 1.5 million roads for the 18,000 municipalities served by several postmen
  • The distribution code of the 18,000 municipalities served by a single postmen


Customer data changes and degrades over time: the average lifespan of a database is about two years. In fact, about 200,000 roads are renamed or deleted in France each year.

To ensure that companies have access to high quality customer data, La Poste holds a range of geographical data files (commune and postcode files, road name file, etc.). To ensure reliable correction and optimal use of addresses, the reference data must be coupled with quality computer processing.

Accordingly, La Poste, in association with the FEVAD (Federation of Distance Selling Companies) and the SNCD (National Union of Direct Communication), has set up a RNVP Software Certification Committee (RNVP = Postal Address Restructuring, Standardisation and Validation).

The certification involves processing a file of 1,000 dummy addresses. The results are then studied in detail by the Service National de l'Adresse. For certification, no more than 5 addresses may be distorted. This benchmark certification, which is renewable every two years, is exclusively awarded to the most efficient RNVP software.

Our Cap Verif and Cap RNVP software are certified by the sna

Postal standards

Standard 32, known as Z 10-011, makes it possible to identify the elements involved in a geopost address and its structure.

Every line must be no longer than 32 characters or spaces.

Standard 32 has not been effective since June 2015 and has been fully replaced by standard 38..

Standard 38, known as XP Z 10-011, has been active since May 1997.

Every line must be no longer than 38 characters or spaces.

Standard 38 replaced Standard 32 on 1 November, 2015.

The 6 golden rules for writing a standardised postal address

Example of a standardised address:

  • Information ordered from name (individual and business name) to the recipient's locality.
  • 6 lines maximum (7 for international, the last line include the country name).
  • Maximum 38 characters per line (space included). A space must appear between each word.
  • No punctuation, italics or underlining from line 4 « Road No., type and name ».
  • The last 3 lines in capital letters.
  • Address block left-aligned.

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