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Rene Wilhelm
Thanks for pointing that out Tore. The error has its origins in the delegated statistics files. In the days immediately following the transfer, 92.220.0.0/15 was listed with country code DE. See for example ftp://ftp.ripe.net/pub/stats/ripencc/2013/delegated-ripencc-20130503.bz2 . It only changed to NO about a month later. The methodology used in this analysis thus classified it as a domestic transfer, the /15 was believed to have stayed in Germany.