http://inspire.ec.europa.eu/codelist/LocatorDesignatorTypeValue/addressNumberExtensionINSPIRE Registry teamJRC-INSPIRE-SUPPORT@ec.europa.euhttp://inspire.ec.europa.eu/registry2015-08-18 17:39 PM CEST2015-08-18 17:39 PM CESTaddress number extensionExtension to the address number.