Numbering Plan The National Numbering Plan of Austria in the format of ITU-T Recommendation E.129 is available for download. Also information about the implementation of number portability is available in the download files below. LinksRufnummernsucheDownloadsAustrian_Numbering_Plan_2011-03-30 (XLS, 212kB)Austrian_Numbering_Plan_2011-03-30 (PDF, 123.1kB)