Telephone numbers in Iceland are seven digits long and generally written in the form xxx xxxx or xxx-xxxx and the E.123 format specifies +354 xxx xxxx from abroad since the country code is +354.

There are no area codes in this closed numbering plan and the international call prefix is 00.

At this time, the international direct dialling code became 00 (previously 90), in line with ITU recommendations.

Over the years new number allocations such as new mobile networks (Vodafone Iceland and NOVA), were granted prefixes.

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