> ## Documentation Index
> Fetch the complete documentation index at: https://help.withallo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Caller ID Name (CNAM)

> Display your business name when you call US and Canadian numbers

CNAM (Caller ID Name) is the name displayed next to your number when you call someone in the US or Canada. Setting it to your business name makes your calls recognizable and improves answer rates.

<Info>
  Two different things, both supported by Allo:

  * **Caller ID** = which *number* is displayed. You choose it in the dialer when you have several lines.
  * **CNAM** = which *name* is displayed. That's this page.
</Info>

## Set your Caller ID Name

<Steps>
  <Step title="Open your number's settings">
    Go to **Settings > Numbers** and select the number.
  </Step>

  <Step title="Open Number reputation">
    Find the **Number reputation** section (also called Caller Name).
  </Step>

  <Step title="Submit your business name">
    Enter the name and submit. Registration is free.
  </Step>
</Steps>

## Rules and timing

* **15 characters maximum** (letters and numbers): pick a short form of your business name, for example "SMITH PLUMBING" rather than "Smith Plumbing & Heating Services LLC"
* Propagation across carriers takes **up to 72 hours**
* CNAM applies to **US and Canadian numbers**: other countries don't use the CNAM system

## Fix a wrong or outdated name

If your calls display someone else's name (for example the previous owner of the number), or you need to change an approved name, [contact support](/en/support/contact): we correct the listing directly with the carrier.

## Calls still showing as spam?

CNAM helps, but spam labeling is a separate system managed by carrier analytics. If your number is labeled "Spam Likely", see [Number flagged as spam](/en/phone-numbers/number-flagged-as-spam).