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Europe · +39

Italy phone number format

  • Country code +39
  • No trunk prefix

Reviewed by Sujan ThapaliyaLast updated

What does a Italy phone number look like?

6 to 11 digits including the area code. Landlines are written +39 0X XXXX XXXX and mobiles +39 3XX XXX XXXX. In full international (E.164) format a Italy mobile is written +393201234567: the country code +39, and no spaces or punctuation.
The anatomy of a Italy phone number under ITU-T E.164: country calling code 39, then the national destination code, then the subscriber number, to a maximum of fifteen digits after the plus. Nationally a Italy number is written +39 0X XXXX 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 Italy numbers in the right-hand form.

Format rules

Country code
+39
National number length
6 to 11 digits including the area code
Trunk prefix
None
The local number is already the international number.
Landline pattern
+39 0X XXXX XXXX
Mobile pattern
+39 3XX XXX XXXX

Examples

Italy 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)
Landline02 1234 5678+390212345678
Mobile3XX XXX XXXX+393201234567

A quirk of Italy numbering

Italy is the exception to the drop-the-zero rule: the leading 0 on a landline is part of the number and must be kept after +39. Mobiles have no leading 0.

Validation

How to validate a Italy 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 Italy? 6 to 11 digits including the area code, 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 (+393201234567) 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 Italy’s format rules. No sign-up.

Frequently asked questions

What does a Italy phone number look like?
6 to 11 digits including the area code. A landline is written +39 0X XXXX XXXX and a mobile +39 3XX XXX XXXX. In full international format that becomes +393201234567.
How do I write a Italy number in international format?
Start with +39, then append the rest with no spaces or punctuation. +39 02 1234 5678 becomes +390212345678.
How many digits is a Italy phone number?
6 to 11 digits including the area code.
How do I tell a Italy mobile from a landline?
By the prefix. Mobiles follow the pattern +39 3XX XXX XXXX, while landlines follow +39 0X XXXX XXXX.
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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