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# How to add your first tracking number(s)

A tracking number is a unique phone number used to attribute calls to specific marketing campaigns, channels, or activities. This guide walks you through acquiring your first number and connecting it to your business.

| Best for: New users setting up their Nimbata account for the first time.

### Step 1. Start the setup

Go to [Tracking > Numbers](https://app.nimbata.com/tracking/numbers) and click **+ Add**.

![](https://storage.crisp.chat/users/helpdesk/website/-/2/f/4/5/2f459a49cf382400/image_hox85s.png)

### Step 2. Choose your source

Select where you want to place your tracking number:
* **All Online Sources** - tracks calls across multiple channels (Google Ads, Organic, Referral, etc.) using dynamic number insertion. Nimbata will ask you to determine a pool size in the next step.
* **Specific Online Channel** - a single number dedicated to one source, such as Google Business Profile or a landing page.
* **Somewhere Else** - for offline sources like billboards, print ads, or business cards.

Click **Next** on the channel configuration page to continue.

### Step 3. Pick your numbers

Choose your prefix (State/City for US; City for EU/UK/AU), select the numbers you want from the list, and click **Finish**.

![](https://storage.crisp.chat/users/helpdesk/website/-/2/f/4/5/2f459a49cf382400/image_drrp2e.png)

**Choosing a pool size (All Online Sources only):** Nimbata will prompt you to set a pool; the collection of numbers assigned to website visitors. 
Click **Get from Google** to let Nimbata sync with your analytics and recommend a size automatically, or use the built-in calculator if you'd prefer to enter your peak hourly visitors manually.

### Step 4. Add a destination number

Go to [Tracking > Destinations](https://app.nimbata.com/tracking/destinations) and click **+ Add**. Select your country, enter the phone number where calls should ring, give it a name, and click **Add Destination**.

![](https://storage.crisp.chat/users/helpdesk/website/-/2/f/4/5/2f459a49cf382400/image_1ll5yka.png)

|| SHORTCUT: Tick Create call flow during this step to automatically set up call routing for your new numbers at the same time.

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🎉 Your tracking numbers are ready. To start receiving calls, make sure your numbers are assigned to a call flow.

Detailed Guide: [**How to set up call flows**](https://help.nimbata.com/en/article/how-do-i-set-up-call-flows-1731pv5/)