for pageNum in range(1, mxd.dataDrivenPages.pageCount+1):
    mxd.dataDrivenPages.currentPageID = pageNum
    df_extent = mxd.dataDrivenPages.dataFrame.extent
    geometries = arcpy.CopyFeatures_management("DDP_Point",arcpy.Geometry())
    for row in arcpy.da.SearchCursor("DDP_Point",["SHAPE@",'ID']):
        if row[1] == str(pageNum):
            if not df_extent.contains(row[0]):
                print  row[1]
    mxd.dataDrivenPages.refresh()