# Mask/Withhold callerid when dialing out using a prefix

This example is written for the **Canistracci OIL** tenant. Create the objects with a **Docs Demo** prefix, test them on non-production numbers, and then adapt the same structure for the production tenant.

Masking or withholding the callerid when dialing out is directly supported with a special destination. You can use it in a Feature Code as follows

400px

<figure id="bkmrk-canistracci-oil-exam">![Canistracci OIL example screen for Mask/Withhold callerid when dialing out using a prefix.](https://manual.mirtapbx.com/uploads/images/gallery/2026-06/ww7dids-form.png)<figcaption>Canistracci OIL example screen for Mask/Withhold callerid when dialing out using a prefix.</figcaption></figure>## Validation

- Confirm the tenant selected in the top bar is Canistracci OIL before creating the example.
- Verify the created objects appear in the expected Configuration menu page.
- Place a controlled test call or run the related status check.
- Remove or disable temporary test numbers when the example is no longer needed.