=IF(LEFT(LEFT(SUBSTITUTE(A1,"http://",""),FIND("/",SUBSTITUTE(A1,"http://","")&"/")-1),4)="www.",MID(LEFT(SUBSTITUTE(A1,"http://",""),FIND("/",SUBSTITUTE(A1,"http://","")&"/")-1),5,256),LEFT(SUBSTITUTE(A1,"http://",""),FIND("/",SUBSTITUTE(A1,"http://","")&"/")-1))
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