Is this a work or a personal phone number?
Check how a number is used before you prospect, for free. Since August 11, 2026, calling a consumer in France without their consent is banned: knowing who you are about to reach is no longer optional.
Free, 5 checks per hour. Answer: work, personal or unknown.
How it works
The tool cross-checks several clues tied to the number and answers as soon as they lean one way, otherwise it says so. It never shows a name or a company: only how the line is used.
Enter the number
National or international format, mobile or landline.
Run the check
Listar analyses the available clues in a few seconds.
Read the verdict
Work, personal or unknown: adapt your approach before you call.
Why check whether a number is work or personal
In France, since August 11, 2026, the rules differ sharply depending on whether you call a consumer or a professional. The type of number is the first clue about who you are about to reach.
Consumers: prior consent required
Since August 11, 2026, calling a consumer in France for marketing without their prior consent is banned. Bloctel, the opt-out list, is gone: not being on a list no longer means you may call. The main exception: a call about a contract in progress and its subject.
Demanding consent
It must come from a clear positive act (no pre-ticked box), lasts one year at most with no tacit renewal, can be withdrawn at any time, including orally, and its proof must be kept for three years.
Heavy penalties
Each breach can bring an administrative fine of up to €75,000 for an individual and €375,000 for a company, as a rule made public. A contract signed after a non-compliant call is void.
Professionals: GDPR and legitimate interest
Business-to-business prospecting is outside this regime. GDPR still applies: according to the CNIL, the French regulator, legitimate interest can be enough if the offer relates to the person's job, provided you inform them and honour their right to object.
Personal numbers, the risk zone
Calling a professional on their personal mobile reaches them in their private life. They expect it less, may be treated as a consumer, and legitimate interest becomes harder to defend. Use the work line.
Good practice
Record where each number comes from, state who you are and why you call from the start, keep an objection list and honour it at once. For a consumer who consented, call Monday to Friday, 10am to 1pm and 2pm to 8pm (French time).
General information, not legal advice. Reference texts: article 13 of French law no. 2025-594 of June 30, 2025 against all public aid fraud, articles L223-1 and L242-16 of the French Consumer Code, decree no. 2026-662 of July 23, 2026. When in doubt, ask a lawyer.
Frequently asked questions
Is the checker free?
Yes, up to 5 checks per hour, with no sign-up. For whole lists, Listar finds and verifies your prospects' mobiles.
What does an unknown result mean?
The available clues are not enough or contradict each other. Rather than give a random verdict, the tool prefers not to answer.
What does the tool show?
Only how the line is used: work, personal or unknown. No name, no company and no other data about the holder is shown.
Can I call a personal number to prospect?
In France, if the person is called as a consumer, you need their prior consent since August 11, 2026. If the call is about their job, the risk is still higher than on a work line: use their work line.
Are international numbers supported?
Yes, enter them in international format, for example +44 7XXX XXXXXX. Premium-rate and special numbers are not checked.