You can sell on Kleinanzeigen, Vinted, OLX, Sahibinden or eBay without any buyer seeing your phone number. The platform verifies a number, but you choose whether listings show it, and messages in the app are enough for almost every sale. The real risk is not the number itself but a buyer who asks you to read out a code.
Which marketplaces ask for a number
| Virtual numbers | Asks again later | One account per number | |
|---|---|---|---|
| Kleinanzeigen | Not allowed by its rules | No | One private (plus one business) |
| Vinted | Depends on the range | For 2-step verification | Yes |
| OLX | Usually accepted | No | No |
| Sahibinden | Depends on the range | No | Yes |
| eBay | Depends on the range | Yes | No |
From our own fact sheets, except where a platform states its own rule. Kleinanzeigen allows no VoIP or other numbers that are not your own, and only numbers from the EU, the EEA and Switzerland; Sahibinden accepts Turkish mobile numbers only; Vinted uses the number for 2-step verification.
Keeping the conversation in the app
- Pick message-only contact. Kleinanzeigen does not publish your verified number unless you choose to; on Sahibinden your number appears only if you choose phone contact for that listing.
- Leave the number out of the text and photos. Sahibinden can reject a listing that puts a number in the description instead of the contact field.
- Answer questions in the chat. A platform can only step in on conversations it can see.
- Share a number at the handover, if at all, once a buyer has committed and you are arranging the meeting.
The "send me the code" trick
A published number invites one particular scam, reported widely from OLX sellers in Brazil. The pattern works on any marketplace.
- Someone calls about your listing They pose as staff of the marketplace and repeat details of the ad to sound genuine.
- They trigger a code Meanwhile they start registering your number in WhatsApp on their own phone, so WhatsApp texts you a code.
- They ask for it The code is presented as a confirmation for your ad, with a warning that the ad will be removed otherwise.
- They take the account With the code they own your WhatsApp and write to your contacts asking for urgent money.
Verifying with a number you do not publish
| Good for | Watch out | |
|---|---|---|
| Your own number, message-only contact | Most sellers | Check each listing's contact setting |
| A second number you keep | Regular sellers, phone contact | It has to stay active |
| A temporary number | A one-off sign-up on a platform that asks once | Not where the platform asks again or requires your own number, as Kleinanzeigen and Sahibinden do |
A temporary number only receives the one sign-up code and is gone after ten minutes, so buyers can never reach it. Use it where the platform never checks the number again, and keep e-mail as your way back into the account.
Common questions
An eBay buyer wants my phone number. Do I have to give it?
No. eBay messages are enough for questions and for arranging the sale. A buyer who insists on a number, or asks for a code sent to it, is a warning sign.
Can I hide my number on Kleinanzeigen?
Yes. Kleinanzeigen does not publish your verified number unless you choose to. Without a published number, buyers contact you through Kleinanzeigen messages.
Why does a buyer ask me to send them a code?
Because the code opens one of your accounts, usually WhatsApp. No real buyer and no marketplace needs it. Do not send it.
Can I sell on Vinted with a temporary number?
Vinted allows one account per number and uses the number for 2-step verification. For an account you sell from regularly, a number you keep is the better choice.