When a number appears with the prefix +39 on your phone, the first reaction is to associate it with Italy. The code +39, assigned to Italy by the International Telecommunication Union, precedes all fixed and mobile numbers in the country. However, identifying the exact nature of the call requires reading the digits that follow this prefix and keeping in mind that the display alone no longer guarantees the true origin of the communication.
Code +39: what the digits after the country prefix reveal
The Italian numbering plan clearly distinguishes fixed lines from mobiles by the first digit that follows +39. This feature allows categorizing a call even before answering.
| Type of number | First digit(s) after +39 | Example | Particularity |
|---|---|---|---|
| Geographic fixed | 0 (mandatory) | +39 06 XXXX XXXX (Rome) | The zero is retained even from abroad |
| Mobile | 3 | +39 3XX XXX XXXX | Never an initial zero |
| Fixed Milan | 02 | +39 02 XXXX XXXX | Two-digit area code |
| Fixed Florence | 055 | +39 055 XXX XXXX | Three-digit area code |
Italy constitutes a global exception on one specific point: the zero of fixed numbers is retained internationally. For almost all other countries, the initial zero is dropped when dialing from abroad. With +39, this zero is an integral part of the number. If you omit it, the call does not go through.
Italian mobile numbers, on the other hand, always start with 3 and have never included an initial zero. An incoming call displayed as +39 3XX corresponds to an Italian mobile. You can recognize a number with the code +39 on Voyagoo to delve deeper into the reading of area and service prefixes.
CLI spoofing and +39 calls: why the display proves nothing
A number displayed as +39 on your screen does not mean that the caller is in Italy. The technique of CLI spoofing (caller ID spoofing) allows any caller, wherever they are, to present a spoofed Italian number.
The display of a number is a clue, not proof of identity. A scammer based outside Italy can make it appear as though they are calling from a legitimate Roman business without any involvement from that business. Reports of fraudulent calls masked under the +39 prefix have significantly increased on reporting platforms like tellows.fr, fueled by the hijacking of Italian VoIP numbers.
AGCOM filtering measures in 2025
The Italian telecommunications authority (AGCOM) has responded with a specific resolution (n° 106/25/CONS). Since August 19, 2025, calls from abroad that fraudulently display an Italian fixed number are blocked by operators. Since November 19, 2025, this filtering also covers fake Italian mobile numbers, with an exception for Italian subscribers actually roaming.
This system reduces some impersonations, but it has its limits. Telemarketing issued from infrastructure located in Italy, whether legal or fraudulent, continues to reach the recipient without being filtered. The filter targets incoming calls to Italy from abroad, not outgoing calls to France.
Concrete warning signs of an incoming +39 call
Identifying a suspicious call does not rely solely on the prefix. Several combined elements allow assessing the reliability of the call before or after answering.
- The caller asks you to call back a different number than the one displayed, or insists that you provide a code received via SMS: this is a classic vishing (voice phishing) scheme
- The displayed number corresponds to an Italian area code (06, 02, 055) but the caller speaks in another language or with a clearly automated script
- The call is very brief (one or two rings) and aims to provoke a callback to a premium-rate number, a technique known as “wangiri”
- The caller mentions a banking, tax, or customs emergency and asks for personal details
Never call back an unknown +39 number without prior verification. A quick search of the full number on a reverse directory or a reporting platform often helps identify a number already reported as fraudulent.
Legitimate call from Italy: common cases in France
Not all +39 calls are suspicious. Several situations explain an Italian call received in France.
A relative traveling or expatriated in Italy may contact you from a local number. In this case, the mobile number starts with +39 3 and the conversation quickly confirms the caller’s identity. French tourists who purchase a temporary Italian SIM card also generate outgoing calls in +39 to their contacts in France.
Italian companies (suppliers, hotels, rental companies) regularly call French clients. The area code then allows cross-referencing the call with the city where the company is located: 02 for Milan, 06 for Rome, 055 for Florence.
European roaming and billing
Since the application of the European roaming regulation, a French subscriber in Italy uses their plan under French conditions for calls, SMS, and data. However, receiving a call from an Italian fixed or mobile number from France falls under the “incoming international calls” conditions of your operator, which are generally without extra cost for the recipient.
The important distinction: receiving a +39 call in France is free for you, it is the Italian caller who bears the international cost. The trap occurs only if you call back a premium-rate number or if you are abroad outside the EU yourself.
The prefix +39 remains a reliable marker for locating Italy within the global telephone system. Reading the digits that follow (0 for a fixed line, 3 for a mobile) refines identification. The only reflex to instill: treat each incoming call as a clue to verify, not as an identity card.
