Spain Phone Number Format Guide
Spanish numbers generally contain nine digits after +34. Geographic and mobile prefixes differ, but there is no domestic trunk zero to remove.
Standard format
+34 NNN NNN NNN
Example
+34 912 345 678
Implementation and validation notes
Spanish numbers generally contain nine digits after +34. Geographic and mobile prefixes differ, but there is no domestic trunk zero to remove.
Validate required state, character set, length, and syntax on the client, then repeat validation on the server. Preserve the original input and normalize into a separate field; never truncate local scripts, compound names, or leading zeroes to fit a single Western assumption.
This guide describes common formats rather than an official registry and cannot enumerate every exception. Generated output is for testing only, not delivery, calling, identity verification, or real account activity.
Related resources
Frequently asked questions
What is the standard Spain phone number format?
A common representation is +34 NNN NNN NNN, for example +34 912 345 678. Spanish numbers generally contain nine digits after +34. Geographic and mobile prefixes differ, but there is no domestic trunk zero to remove.
How should Spain phone number test data be stored?
Store the original value as a string so leading zeroes, spaces, hyphens, accents, and local scripts are preserved. Use a separate normalized field for search.
Does correct formatting prove the data is real?
No. Syntax validation cannot prove an address is deliverable, a number is assigned, or a name belongs to a real person.