Yup, Scandinavia of course, northern Germany, coast of France (Normandy in particular), probably a little in Sicily, but show up strongs in the British Isles (all of ‘em).
I did the DNA test... Irish - Scottish and then this stuff...
Sweden 3%, Denmark 2%, Iceland 1% and The Netherlands 2%.
I assume that these were the Viking’s... They frequently invaded Scotland and Ireland.