StayDetective

The license number: a check many fake listings fail

Many European countries require short-term rentals to display a registration number. In Italy it's the CIN (Codice Identificativo Nazionale), mandatory since 2025. A missing number is a warning; a number that belongs to a different region is much worse – it means the listing borrowed someone else's identity.

Check a listing – freeUpdated October 28, 2026

Warning signs

  1. 1

    No CIN on an Italian listing

    Short-term rentals in Italy must show their CIN in the listing. An apartment without one is a red flag.

  2. 2

    The CIN points to another province

    A CIN starts with IT followed by the six-digit ISTAT code of the municipality; its first three digits are the province (058 is Rome, 015 Milan, 048 Florence). A Rome apartment with a code from another province is using someone else's number.

  3. 3

    A malformed number

    Too short, a wrong prefix, or text instead of a code (“license on request”).

  4. 4

    The same number on several listings

    A registration number belongs to one property. If a search finds it on listings in different places, at least one of them is fake.

  5. 5

    No registration number in Spain, Portugal, France or Greece

    These countries – or many of their cities – also require a number for holiday rentals: Spain's national registry, Portugal's AL number, France's numéro d'enregistrement, Greece's AMA.

  6. 6

    The host won't share it

    A legitimate host has no reason to hide a number they're legally required to display.

What to do

  1. Find the license or registration number in the listing details – usually near the end of the description or in the house rules.
  2. For Italy, check that the province digits match the city.
  3. Search the number in quotes on Google – it should lead to this property only.
  4. Italian CIN codes can be looked up in the Ministry of Tourism's national database (BDSR).
  5. A free StayDetective check validates the CIN structure and province automatically.

What our check looks at

  • Presence of Italy's CIN on the listingfree check
  • CIN province code vs. the claimed locationfree check
  • Registration number on holiday rentals in Spain, Portugal, France and Greecefree check

Questions

Does a valid license number mean the listing is safe?+

No. A hijacked listing can display the original property's genuine number. The license is one check among many – that's why the full report combines it with photos, reviews and the map.

Why does the province code matter so much?+

Because it's hard to fake consistently. Scammers copy a working CIN from another listing, and that listing is often somewhere else in Italy. A Rome apartment with a Naples code is a mismatch anyone can verify.

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