How to Set Up Call Tracking (Number Pool)

Modified on: Tue, 1 Sep, 2026 at 3:39 AM

Call Tracking
How to Set Up Call Tracking (Number Pool)
Show a unique phone number to leads based on where they came from, so every call can be attributed back to its campaign or landing page.
What You'll Learn

Number pools are a great way to track the calls driven by paid campaigns. Using number pools, you can attribute call-tracking conversations based on specific phone numbers being shown to leads that land on designated landing pages and websites. These numbers are only displayed on specific pages and are only shown to leads who take a specific course of action. They're also known as "call tracking codes," but we call them "number pools."

In this article, we'll go over how to set up number pools so you can start collecting data about your visitors.

Video Walkthrough
1

Set Up a Number Pool for Call Tracking

Update

You can't enter gclid in the URL to imitate Google ads anymore, it should be from the actual Google ads.

Step 1
Open Settings → Phone Numbers
Settings menu


Then click on Phone Numbers

Phone Numbers menu
Step 2
Add a Number Pool

Click "Add Number Pool." You can find it under the "+ Add Number" dropdown menu located on the right side of the page.

Add Number Pool dropdown
Step 3
Choose "Visitors Activity"

Since we are creating a number pool for call tracking purposes, we will select the "Visitors Activity" option.

Visitors Activity option

From this list, select which visitors you want to track. Once you pick, click Next: Create Pool. We recommend tracking All visitors.

Note: If you select PPC search, the number on the website will only switch when the visitors are landing from a paid ad.

Select visitors to track
Step 4
Name the Pool & Set the Pool Size

Number Name — In this field, you can name your tracking number.

Number Name field

Pool Size — Each number pool has a minimum of 4 tracking numbers in it. You can decide the size of the pool depending on the volume of your calls. The more volume, the more tracking numbers will be needed.

Pool Size field
Step 5
Set the Forwarding & Swapping Numbers

Forwarding Number — Enter the main business number, or the number where you would like to receive calls whenever callers dial the tracking number.

Note:

You cannot use a Twilio/LC phone number as your forwarding number, as this will create a looping issue. Be sure to use a different external number to avoid call routing problems.

Forwarding Number field

Swapping Number — Input the phone number you would like the system to update on your website. It can either be the same number as the forwarding number you set in the previous step, or you can uncheck the box to provide a different number.

Swapping Number field

By checking this box, you acknowledge that you are purchasing 4 new phone numbers to add to your number pool.

Acknowledge purchase checkbox

Once you fill out all the information, click Next: Choose Numbers.

Next: Choose Numbers button
Step 6
Choose Your Tracking Numbers

When creating tracking numbers, you have the option to choose phone number(s) local to the area code, a toll-free number, or numbers from any given area code.

Local Number — When you select local number, you will be shown 4 different phone numbers local to the phone number you have set as a "Forwarding Number" earlier in this process.

Local number options

Toll-free numbers — This option gives you the ability to choose toll-free numbers for your number pool. Use this option when there are no numbers available in your desired area code.

Toll-free number option

To see the available toll-free numbers, choose the area code from the dropdown menu.

Toll-free area code dropdown

Numbers from any given area code — If you are open to choosing a phone number from a different region, just type the area code and click "Check Availability," and you will see the available phone numbers in a few seconds.

Any area code numbers

Once you've created a tracking number using any of the 3 methods above, let's move to the next steps — click "Next: Number Features."

Next: Number Features button
Step 7
Configure Whisper Message & Call Recording

Whisper Message — When you receive a call, you will hear this message. If you set the whisper message as "Call from [Source]," it will sound something like "Call from a ad campaign." The caller cannot hear this message — it's only for you as a CRM user.

Whisper Message setting

Call Recording — Use the checkbox to allow the system to record calls, and customize the message the caller hears, such as "This call will be recorded for quality assurance purposes."

Call Recording setting
Step 8
Activate the Number Pool

Click on Activate Number.

Activate Number button
2

Integrate the Tracking Snippet on Your Website

Once you set up the number pool, you will need to integrate the snippet on your website. Below is the step-by-step process:

Step 1
Copy the Snippet From the Number Pool

Go to Number Pools. Go to the number pool you want to use, then click the three dots.

Go to Number Pools Number pool three-dot menu

Click "Number Pool Info."

Number Pool Info option

Copy the "Normal Snippet Code." This is the code we need to paste onto the Website/Funnel.

Normal Snippet Code panel


Head over to "Sites" section. Click on Funnels or Websites.

Copy Normal Snippet Code
Step 2
Paste the Snippet Into Your Site or Funnel

Click on Funnels or Websites. Click the funnel where you want to use the number pool.

Click the funnel

Once you are inside the funnel/website, click the "Settings" tab. Now paste the copied Normal snippet at the bottom of your Body Tracking code field.

Paste snippet in Body Tracking code

Click Save. This will swap the number within the entire Funnel/Website.

Save tracking code
Step 3 · Optional
Apply Tracking to a Single Page Only

If you want the number to swap on one single funnel/website page instead, click the Tracking Code icon at the top left side.

Tracking Code icon

Click the "Footer Tracking" option on the right side, then paste the code in the code editor.

Footer Tracking option Paste code in code editor

Click "Save" to proceed ahead.

Save footer tracking code
Step 4
Update the Swapping Number Later, If Needed

Go back to your number pool setup. Hover over the number pool you just created and click the three dots menu.

Hover number pool three-dot menu

Click on "Update Tracking Number." Copy the swapping number and paste it on the Funnels/websites.

Update Tracking Number option Copy swapping number

In order to update the swapping number, follow these steps: click the three dots menu, then click "Edit Configuration."

Three dots menu


Uncheck the option "Swapping number(s) same as forwarding number" and set your own swapping number. Enter the swapping number in the respective field and click the "Add" button.

Edit Configuration option

Note:

You cannot use a Twilio/LC phone number as your forwarding number, as this will create a looping issue. Be sure to use a different external number to avoid call routing problems.

Uncheck same-as-forwarding option

Now you can paste the swapping number on the website.

Paste swapping number on website
Step 5
Confirm Attribution in Call Reporting

Once the number pool is set up and running, you can view the Keyword column under Reporting → Call Report.

Your website visitors search the keywords, then land on your website and call the tracking number — we're able to attribute the source and keyword in the call reporting tab.

Call Report keyword column

After you scroll to the right and click the arrow-down button, you can also look at the link the contact was visiting. You can also click the contact's name to view their activities:

Scroll right to view contact activity
3

How To Test Number Swapping

Once you've added the tracking script to the Body of your webpage, you can test that the number swap is working by opening an incognito browser.

You would enter the following into your incognito browser — yourwebsite.com/landing-page — then hit enter.

Testing number swap in incognito browser

If the Tracking Option All Except Direct is selected, you must link the landing page URL from another webpage instead of entering the link directly from the browser to test.

Number Pool Test example link

E.g. link "Apple Smiles" with yourwebsite.com/landing-page.

4

How To Set Up Keyword Tracking

For the platform to display the keyword that was searched before the call was initiated, you'll need to add the following parameter to the ad URL in Google Ads: ?keyword={keyword}

So if you have a Google Ad with a URL like yourwebsite.com/landingpage, you would update that URL to be: yourwebsite.com/landingpage/?keyword={keyword}

Related: New Feature Released — Call Tracking!!

5

To Swap Numbers in a Button

You can use an anchor tag and set href with the phone number and text as you want.

e.g. <a href="tel:(972) 421-5139" class="btn btn-blue">Call Us</a>
Important:

The phone number inside href="tel:..." should use the same format as the visible/swapping number. Number Pool matching does not automatically normalize local and international formats. For international numbers, use either local or E.164 formatting consistently throughout the page.

6

Group ID

It will help to swap only one number, but not each and every number, from different number pools — it finds the best matching number pool and swaps the number.

Use-Case Example

If the user is running two ads: if leads land on the first ad, the website will show one number; if they land on the second ad, the website will show a different number. You'll need to change the source according to the ad and set the group using a Group ID.

Edit the number pool → click Add/Edit Group Id → name the group Id → click Update.

Add/Edit Group Id

You can click the information icon to copy the Group snippet to integrate it into the footer of your website:

Copy Group snippet
7

Frequently Asked Questions

Q: Why must we set up number pools to track calls?

We recommend setting up call tracking for all sources. We can determine how they arrive at your website by switching the phone number as soon as leads land from different sources. For example, for real live Google ads, there are &gclid parameters at the end of the landing URL that's how our snippet code sees them and switches the number accordingly, so once they call that tracking number, we match up with the website cookies, link them, and attribute the source to the leads.

Once the website visitors call the tracking number, we can attribute keywords in the Call Reporting tab, and that column will be filled out with the data:

Call Reporting keyword attribution
Q: What is the cost/price for setting up a Number Pool?
Each number in a Number Pool is billed at the same rate as a standard phone number in your account. A minimum of 4 numbers is required per pool, which means you will incur charges for each of those numbers.

If you're using LC-Twilio, standard Twilio pricing applies (e.g., $1/month per U.S. number plus usage). If your agency is on your own Twilio, pricing will depend on your Twilio account settings. Keep in mind that larger pools will cost more, so choose the pool size based on your traffic volume.

You can always view or adjust phone number costs under Subaccount → Settings → Phone Numbers.
Q: Can I direct calls from the Number Pool to the web app or the mobile app?
Currently, this is not possible. Calls made to Number Pool can only go to the 'Forward Calls to' number.
Q: Do the displayed phone number and the clickable tel: link need to use the same format?

Yes. Number Pool swapping uses the phone number in the exact format configured on the page. If the displayed phone number and the value inside the tel: link use different formats, the displayed number may swap while the clickable link does not.

For example — displayed number: (02) 6193 4089

Recommended clickable link: <a href="tel:(02) 6193 4089">Call Us</a>

Using <a href="tel:+61261934089">Call Us</a> while the displayed number is (02) 6193 4089 may prevent the hyperlink from swapping, because the two values use different formats.

Q: Are local and international/E.164 versions of the same phone number treated as the same number?

No. Number Pool swapping does not automatically normalize local and international formats as equivalent. For example, (02) 6193 4089 and +61261934089 are treated as different values for matching purposes.

To ensure both the displayed number and clickable link swap correctly, use the same format consistently across:

  • The swapping number
  • The visible phone number on the webpage
  • The href="tel:..." value
Q: Can I use international or E.164 phone number formatting with Number Pools?

Yes, international/E.164 formatting can be used, but the format must be used consistently. For example, if the swapping number is configured as +61261934089, then the webpage should also use:

Displayed number: +61261934089

Clickable link: <a href="tel:+61261934089">Call Us</a>

Do not mix local and international formats for the same number if you expect both the displayed number and hyperlink to swap.

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