The prefix +39 identifies the Italian numbering plan, not the geographical location of your correspondent. A number starting with +39 can ring in Rome, Milan, or in the pocket of an Italian traveler on a layover in Lisbon. This distinction between network affiliation and actual location is the primary source of confusion when dialing a call to Italy or receiving a call from this prefix.
Italian number and E.164 standard: the zero that changes everything
Most European countries apply a simple rule: when dialing a number from abroad with the international prefix, the initial zero is dropped. France operates this way, Germany does too. Italy does exactly the opposite.
AGCOM (Autorità per le Garanzie nelle Comunicazioni) confirmed in its numbering plan update that the zero is an integral part of the national number according to the UIT-T E.164 recommendation. Therefore, calling a landline in Florence from Paris means dialing +39 055 followed by the subscriber’s number, without ever removing that zero.
To properly understand the prefix +39 and its peculiarities, keep this point in mind: forgetting the zero is the primary cause of failed calls to an Italian landline.
| Type of number | Format from France | Zero retained? |
|---|---|---|
| Landline Rome (06) | +39 06 XXXX XXXX | Yes |
| Landline Milan (02) | +39 02 XXXX XXXX | Yes |
| Italian mobile (3XX) | +39 3XX XXX XXXX | Not applicable (no zero) |
| French landline (01) | +33 1 XX XX XX XX | No (zero removed) |
This table highlights the logical gap between the two countries. On an Italian mobile, the question does not arise since mobile numbers start directly with 3. On a landline, however, the trap is systematic for a caller used to the French format.
Prefix +39 and location: why the prefix does not indicate where your correspondent is
A number in +39 indicates a subscription taken out with an operator registered in Italy. It says nothing about the physical position of the phone at the time of the call. An Italian traveling in Tokyo keeps their +39, and a French person living in Turin with a French plan retains their +33.
The prefix identifies the numbering plan, not the actual location of the caller. This confusion fuels many questions surrounding incoming calls displaying a +39: receiving a call from this prefix does not guarantee that the person is physically in Italian territory.
Conversely, if you are trying to reach a French expatriate living in Naples but subscribed to a French operator, you will need to dial +33 and not +39, even if the person is located in Italy.
Structure of the Italian numbering plan: first digits and service categories
The UIT-T document details the distribution of numbering resources allocated by AGCOM. The first digits after +39 identify the service category, according to a precise scheme:
- Numbers starting with 0 correspond to geographic lines (landlines), with local prefixes like 02 for Milan or 06 for Rome. The length of the national number varies between 3 and 12 digits excluding the country code
- Numbers beginning with 3 designate mobile and personal services, which explains why an Italian mobile always starts with +39 3XX
- The prefix 8 groups free numbers and shared-cost services between the caller and the called party, functional equivalents of the French 0800
Blocks 2 and 6 remain reserved for future needs, while 4 is dedicated to internal services and kiosks operating solely via SMS/MMS or data transmission. The 5 covers nomadic telephony services, and 7 covers dial-up Internet access (a legacy of dial-up).
Variable length of Italian numbers
A point often overlooked in practical guides: the length of Italian numbers is not fixed. A geographic number can have fewer digits than a mobile number. This variability complicates automatic validation in web forms or CRMs that impose a fixed number of characters. If you manage Italian contacts in a professional tool, disable the fixed length constraint on the phone field.
Calling Italy from France: rates and roaming in the EU
Since the application of the European regulation on roaming, calls made from one EU country to another member country benefit from a pricing framework. A French subscriber in Italy uses their national plan without extra charges for calls, SMS, and mobile data, within the limits of reasonable use defined by the operator.
On the other hand, calling a +39 number from France (without being physically in Italy) falls under a classic international call. International calls to Italy are not covered by the roaming regulation. Billing then depends on your plan: some operators include calls to European landlines, while others charge by the minute.
Checking the conditions of your plan before dialing a +39 from France avoids unpleasant surprises on the bill. Plans that include calls to Europe do not always cover Italian mobiles, only landlines.
Unsolicited incoming call in +39: spam or phone scam
Italy, like France, faces a problem of abusive telemarketing. Receiving a call from a +39 number without an identified correspondent may indicate automated solicitation. AGCOM has established rules against aggressive telemarketing, but their enforcement remains uneven.
Some useful reflexes when faced with an unknown incoming call in +39: do not call back a number starting with +39 followed by an unusual prefix (other than 0 or 3), check the number on an Italian reverse directory, and block the number if the call repeats without a voicemail.
The prefix +39 remains the only prefix assigned to Italy, with no regional variant at the international level. A call displayed as +39 indeed comes from the Italian network, but the reliability of caller identification depends on the operator and the protocol used (number spoofing also exists on Italian lines).