🇳🇺Niue (officially: Niue) is filed in ISO 3166-1 under alpha-2 code NU, alpha-3 code NIU and numeric code 570. Its international dialing code is +683 and its country-code top-level domain is .nu. The capital is Alofi. Region: Oceania.
Currency: NZD (New Zealand Dollar).
The two-letter code appears in domains, locales (like en-NU), shipping and licence plates; the three-letter code in passports, finance and sport; the numeric code where Latin script is unavailable.