Yes. 0800 033 018 is One NZ's Outbound sales and service calls number in New Zealand. It's listed on One NZ's own page.
Last checked against one.nz on 1 November 2026.
Scammers can make any number appear on your screen. If someone called you, hang up and ring 0800 033 018 yourself.
Yes. It's on One NZ's own website, and we check it every day.
Not necessarily. Caller ID can be faked. Hang up, then call 0800 033 018 yourself so you know who you're talking to.
One NZ doesn't send texts asking you to call. Use One NZ's app or website, typed by hand.
Already shared a code, or let them onto your device?
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