Unluckily, Netflix doesn't offer any Netflix free trial directly. But you can enjoy streaming Netflix for free. If you have any of the plans purchases, you may get free access to Netflix TV shows, movies and latest releases,
Using Xfinity plan: On purchase of Comcasts Xfinity plan, you can enjoy Netflix free trial. This is a limited period offer.
Using T-mobile subscription: Right now, only some of the 'Streaming on Us' subscribers are offered a Netflix free trial plan.
Using Verizon’s Netflix Plan: Purchase the myPlan service on Netflix to get ad free Max subscription. This streams Netflix completely free.