It is a Zeppelin — made by the Zeppelin company. The name should probably always be capitalized, so that it's not mistaken for a generic term. Airships comprise blimps (no supporting structure), dirigibles (some sort of supporting structure). Zeppelins are a brand of dirigible. The “NT” is justified — these New Technology Zeppelins bear little resemblance (besides the shape) to the Hindenburg.
I'm a huge fan of airships; if I were rich enough, I'd have one of these Zeppelins parked in my back yard.