License and attribution
Help the OpenCellID community grow through clear attribution. Find credit text, placement guidance and contact details for exceptions.
OpenCellID data is licensed under CC BY-SA 4.0, including API results, dataset downloads and daily changes.
OpenCellID grows through observations shared by its community. Visible attribution recognizes that work and helps people discover the project, contribute measurements and improve coverage for everyone. This is why we ask you to make the credit easy to find.
Attribution required
When sharing OpenCellID data under CC BY-SA 4.0, credit OpenCelliD, link to the source and license, and indicate any changes. Use one of the attribution formats below to give the community clear recognition.
Attribution examples
Use wording that identifies the data and its source:
Cell tower data from OpenCellID, licensed under CC BY-SA 4.0.
Website or map
Cell tower data from <a href="https://opencellid.org">OpenCellID</a>,
licensed under
<a rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>.Mobile or desktop app
For a compact credit, use this text with both links enabled. The example uses Markdown; apply the same links in your app's interface.
Cell tower data from [OpenCellID](https://opencellid.org) · [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)Report or presentation
Use the linked wording above in digital documents. For print or plain text, include the URLs:
Cell tower data from OpenCellID (https://opencellid.org),
licensed under CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/).API response metadata
Include the credit and links as metadata in your own API response. For example:
{
"attribution": {
"text": "Cell tower data from OpenCellID, licensed under CC BY-SA 4.0.",
"source": "https://opencellid.org",
"license": "https://creativecommons.org/licenses/by-sa/4.0/"
}
}If you modify the data, add a description alongside the credit, such as “Changes: coordinates rounded to two decimal places.” Retain supplied notices.
Where to place the credit
Make the credit visible where users encounter the data, helping them discover OpenCellID and contribute back. The examples below show how to put this into practice.
| Use | Placement |
|---|---|
| Website or map | On the page displaying the data, beside the map or visualization. |
| Mobile or desktop app | On the screen displaying the data or results. |
| Report or presentation | In the relevant figure caption or on the slide using the data. |
| API serving the data | In every response containing OpenCellID data, through response metadata or headers carrying the required credit, source link and license link. Also display the credit in the endpoint documentation. |
Attribution exceptions
Need to remove or change the attribution?
Write to [email protected] if you need an attribution exception or help with placement. Tell us about your product, how you use the data and what you would like to change. Exceptions to the attribution requirement must be granted in writing by Unwired Labs and apply only to the agreed terms.
Other license terms
When sharing adapted material, follow the license's ShareAlike requirements. Retain supplied copyright, license and warranty notices, and do not restrict recipients' licensed rights. See the full license terms, including its database provisions.