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Europe · +354

Iceland phone number format

  • Country code +354
  • No trunk prefix

Reviewed by Sujan ThapaliyaLast updated

What does a Iceland phone number look like?

7 digits, always. No area codes. Landlines are written +354 XXX XXXX and mobiles +354 XXX XXXX. In full international (E.164) format a Iceland mobile is written +3546111234: the country code +354, and no spaces or punctuation.
The anatomy of a Iceland phone number under ITU-T E.164: country calling code 354, then the national destination code, then the subscriber number, to a maximum of fifteen digits after the plus. Nationally a Iceland number is written +354 XXX XXXX; in E.164 the prefix and the spacing both come off.
National formatting is for people. E.164 is for databases, APIs, and caller ID — store Iceland numbers in the right-hand form.

Format rules

Country code
+354
National number length
7 digits, always. No area codes
Trunk prefix
None
The local number is already the international number.
Landline pattern
+354 XXX XXXX
Mobile pattern
+354 XXX XXXX

Examples

Iceland phone number examples

These are format patterns showing digit grouping and prefix rules. They are examples of shape, not working numbers; do not use them to test a live call path.

TypeWritten domesticallyInternational (E.164)
Landline511 1234+3545111234
MobileXXX XXXX+3546111234

A quirk of Iceland numbering

Iceland never changes its clocks. It sits on GMT all year, so the gap to London swings by an hour each summer.

Validation

How to validate a Iceland number

Validating a phone number is three separate checks, and conflating them is the usual source of bugs:

  1. Format: does it match the shape for Iceland? 7 digits, always. No area codes, after the country code .
  2. Allocation: is the prefix actually in use? A number can be the right length and still belong to an unallocated range.
  3. Reachability: is there a live subscriber? Only a carrier lookup (HLR or equivalent) answers that, and it is the only check that catches disconnected numbers.

For form validation, check format only and be permissive: accept spaces, dashes, brackets, and a leading 0 then normalise. Rejecting a real customer because they typed their own number the way they normally write it is a far more expensive error than storing one badly formatted row.

Store in E.164 (+3546111234) and format for display at render time. Storing the display format is how a database ends up with the same person recorded four different ways.

Format any number instantly

Paste a number into the free phone number formatter to convert it to E.164 and see whether it matches Iceland’s format rules. No sign-up.

Frequently asked questions

What does a Iceland phone number look like?
7 digits, always. No area codes. A landline is written +354 XXX XXXX and a mobile +354 XXX XXXX. In full international format that becomes +3546111234.
How do I write a Iceland number in international format?
Start with +354, then append the rest with no spaces or punctuation. +354 511 1234 becomes +3545111234.
How many digits is a Iceland phone number?
7 digits, always. No area codes.
How do I tell a Iceland mobile from a landline?
You cannot tell from the number alone in Iceland: mobile and fixed lines share the same format, so a carrier lookup is the only reliable way.
Should I store phone numbers with the plus sign?
Yes. Store every number in E.164: leading +, country code, national number, no spaces or punctuation, up to 15 digits. It is the only format that is unambiguous internationally, and it is what makes deduplication work. Format for display, store canonical.

Sources

  1. ITU-T Recommendation E.164 — The international public telecommunication numbering plan — International Telecommunication UnionThe international number format, the 15-digit maximum, and how country codes and national numbers compose.
  2. ITU-T International Numbering Resources — International Telecommunication UnionThe assignment of country calling codes and the published national numbering plans they belong to.

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