The 25-year-old shot-stopper has five international caps to his name, but has not featured for his country since February's friendly win over Italy.
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The Dutch will play their final qualifying fixtures against Hungary and Turkey this week, with Krul seeing them as a chance to showcase his abilities on the international stage.
"I look forward to show my skills again it’s been a long time since that the coach has seen me at work," he said.
"The World Cup is at the end of the season so we still have a long way to go in which I can prove myself. Things can change.
"The coach has no fixed team yet, it's all still open. These two qualifying matches are ideal moments [to prove yourself].
"Italy [at] home was my last match. Then I suffered injuries, but fortunately I am now fit again."
Krul has been an ever-present under Alan Pardew in the Premier League so far this term, with the Tyneside club sat 11th after seven games.