An updated numbering plan for Niue took effect from 1 May 2018. The country code for Niue is +683, and the international call prefixis00.
| List of allocations[1] | |||
|---|---|---|---|
| Assignment | Country code | Telephone number | Status |
| Operator assistance | 683 | 010 | Active |
| Faults & directory service | 683 | 015 | Active |
| Weather & tidal information | 683 | 101 | Active |
| Emergency | 999 | Active | |
| Reserved | 683 | 1000 – 1099 | Reserved |
| Post paid AMPS mobile | 683 | 1100 – 1999 | Not Active |
| Prepaid GSM fixed wireless | 683 | 2000 – 2999 | Not Active |
| Post paid AMPS FWT | 683 | 3000 – 3999 | Not Active |
| Post paid PSTN | 683 | 4000 – 4999 | Active |
| Prepaid GSM mobile 2G | 683 | 5000 – 5999 | Active |
| Prepaid GSM mobile 2G | 683 | 6000 – 6999 | Active |
| Postpaid PSTN | 683 | 7000 – 9999 | Active |
| Prepaid LTE mobile | 683 | 8884000 – 8889999 | Active |
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