We can help you find the Postcrossing ID for your postcard. First, please consider the following.

1. Make sure that the postcard is an official Postcrossing postcard and not a thank you postcard or a private swap.
2. You can try to enter the correct Postcard ID many times without consequence. So, why not try a different combination? For instance, sometimes 1's can look like 7's, 3's and 5's can look like 8's, etc. Don't worry, the Postcrossing system will not let you register a postcard that does not belong to you.

3. Postcards with postcard IDs over one year old cannot be registered. Postcrossing.com does not keep track of which member was assigned a specific Postcrossing ID so submitting an Unknown ID request is not helpful.

If you are still unable to register the postcard, please go to the Unknown ID request page. Fill in as much information as possible even if you are not sure. Sometimes if there is very little information, a description of the postcard can help. Note that the postal cancellation mark often displays the date and postal code/city.

You only need to fill out the Unknown ID request once. If you make a mistake, delete the request and enter a new one. It can take several days for a match to be found. Please be patient.

Additionally, if you find the Postcard ID and register the postcard before you receive a response, please delete the request.

You can delete any request by clicking the delete button for the request on your "Received postcards" list.