Is 0800 800 021 really One NZ?

Yes. 0800 800 021 is One NZ's Mobile number in New Zealand. It's listed on One NZ's own page.

Last checked against one.nz on 1 November 2026.

Yes, this is One NZ

One NZ Mobile · New Zealand 0800 800 021 Source: one.nz · checked 1 November 2026

A call showing this number can still be a scam

Scammers can make any number appear on your screen. If someone called you, hang up and ring 0800 800 021 yourself.

Is 0800 800 021 really One NZ?

Yes. It's on One NZ's own website, and we check it every day.

I got a call from 0800 800 021. Is it safe?

Not necessarily. Caller ID can be faked. Hang up, then call 0800 800 021 yourself so you know who you're talking to.

Someone texted me this number and told me to call it.

One NZ doesn't send texts asking you to call. Use One NZ's app or website, typed by hand.

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