Netflix no longer streaming

I don't know if the Netflix application uses different ports for communication with the server than just running Netflix in a browser. With Safari on my MacBook Pro the page renders for Netflix right away with no significant lag. It seems to run just fine through a browser, at least here in east TN. The router that our traffic pops out at is in Nashville. I checked earlier today and there were no significant reports on downdetector.com for Netflix. It does not appear to be a problem with the Netflix delivery.