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Europe · +34

Spain phone number format

  • Country code +34
  • No trunk prefix

Reviewed by Sujan ThapaliyaLast updated

What does a Spain phone number look like?

9 digits, always. No trunk prefix to drop. Landlines are written +34 9XX XXX XXX and mobiles +34 [67]XX XXX XXX. In full international (E.164) format a Spain mobile is written +34612345678: the country code +34, and no spaces or punctuation.
The anatomy of a Spain phone number under ITU-T E.164: country calling code 34, then the national destination code, then the subscriber number, to a maximum of fifteen digits after the plus. Nationally a Spain number is written +34 9XX XXX XXX; 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 Spain numbers in the right-hand form.

Format rules

Country code
+34
National number length
9 digits, always. No trunk prefix to drop
Trunk prefix
None
The local number is already the international number.
Landline pattern
+34 9XX XXX XXX
Mobile pattern
+34 [67]XX XXX XXX

Examples

Spain 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)
Landline912 345 678+34912345678
Mobile[67]XX XXX XXX+34612345678

A quirk of Spain numbering

Spain has no national trunk prefix, so the number you dial locally is exactly the number you dial from abroad after +34.

Validation

How to validate a Spain 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 Spain? 9 digits, always. No trunk prefix to drop, 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 (+34612345678) 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 Spain’s format rules. No sign-up.

Frequently asked questions

What does a Spain phone number look like?
9 digits, always. No trunk prefix to drop. A landline is written +34 9XX XXX XXX and a mobile +34 [67]XX XXX XXX. In full international format that becomes +34612345678.
How do I write a Spain number in international format?
Start with +34, then append the rest with no spaces or punctuation. +34 912 345 678 becomes +34912345678.
How many digits is a Spain phone number?
9 digits, always. No trunk prefix to drop.
How do I tell a Spain mobile from a landline?
By the prefix. Mobiles follow the pattern +34 [67]XX XXX XXX, while landlines follow +34 9XX XXX XXX.
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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