Vowels are a funny thing in different languages. In yugoslavian languages O is often pronounced like "U" (oo), and E is more like english A, "snek" - snake or snack, "blek" - black.

I still think it should be Now-ster because it's from Notes and Other Stuff Transmitted by Relays. NaOSTbR

l0k18

I would have thought it makes a U sound more often, cool noodle...

nullama

nostr

ASK SN: How do you pronounce Nostr?

N-ah-ster, Just like: H-ah-dler

Fact: The letter O makes the "ah" sound more often than the "oh" sound in the english language. 